A Problem Solving Approach to Mathematics for Elementary School Teachers (12th Edition)
A Problem Solving Approach to Mathematics for Elementary School Teachers (12th Edition)
12th Edition
ISBN: 9780321987297
Author: Rick Billstein, Shlomo Libeskind, Johnny Lott
Publisher: PEARSON
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Concept explainers

Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 …
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…
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Textbook Question
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Chapter 3.4B, Problem 33A

In each of the following, answer the question using estimation methods if possible. If estimation is not appropriate, explain why not.

a. Josh has $ 380 in his checking account. He wants to write checks for $ 39 ,   $ 28 ,  $59 and $250 . Will he have enough money in his account to cover for these checks?

b. Gila deposited two checks into her account, one for $ 981 and the other for $ 1140 . Does she have enough money in her account to cover a check for $ 2000 if we know she has a positive starting balance to start with?

c. Alberto and Juan are running for city council. They receive votes from two districts. Alberto receives 3473 votes from one district and 5615 votes from the other district. Juan receives 3463 votes from the first district 5616 from the second. Who gets elected?

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Chapter 3 Solutions

A Problem Solving Approach to Mathematics for Elementary School Teachers (12th Edition)

Ch. 3.1 - Mathematical Connections Explain why a number and...Ch. 3.1 - If a numeration system has place value, what does...Ch. 3.1 - Explain the difference between zero and nothingCh. 3.1 - What are the major drawbacks to each of the...Ch. 3.1 - a. Why are large numbers in the United States...Ch. 3.1 - In the Roman numeral system, explain a when you...Ch. 3.1 - Mathematical Connections Research an abacus and...Ch. 3.1 - Prob. 8MCCh. 3.1 - a. Create a numeration system with unique symbols,...Ch. 3.1 - Prob. 10MC
Ch. 3.1 - Prob. 11MCCh. 3.1 - Betty asks how the two 3s in the numeral 32,356...Ch. 3.1 - A student claims that the Roman system is a...Ch. 3.1 - When using Roman numerals, a student asks whether...Ch. 3.1 - The figure below represents 237. Which number is...Ch. 3.1 - Prob. 2NAEPCh. 3.1A - Write the following numerals in words....Ch. 3.1A - Indicate which digit in 234,518 has place value....Ch. 3.1A - For each of the following base-ten numerals, give...Ch. 3.1A - Rewrite each of the following as base-ten numeral....Ch. 3.1A - If , and each represents different non-zero...Ch. 3.1A - Prob. 6ACh. 3.1A - A certain three-digit natural number has the...Ch. 3.1A - For each of the following pairs of numerals, tell...Ch. 3.1A - A cornerstone representing when a building was...Ch. 3.1A - Write each of the following numerals in Roman...Ch. 3.1A - Complete the following table, which compares...Ch. 3.1A - In the counting frame, the value of each dot is...Ch. 3.1A - Write the base four numeral for the following...Ch. 3.1A - Write the first 15 counting numerals for each of...Ch. 3.1A - How many different digits are needed for the...Ch. 3.1A - Write 2032four in expanded notation and then...Ch. 3.1A - Determine the greatest three-digit number in each...Ch. 3.1A - Find the numeral preceding and succeeding each of...Ch. 3.1A - What, if anything, is wrong with the following...Ch. 3.1A - What is the least number of base-four blocks...Ch. 3.1A - Draw base-five blocks to represent 231five.Ch. 3.1A - Prob. 23ACh. 3.1A - Without converting to base-ten, tell which is the...Ch. 3.1A - Recall that with base-ten blocks: 1long=10units,...Ch. 3.1A - Convert each of the following base-ten numerals to...Ch. 3.1A - Write each of the following numerals in base ten....Ch. 3.1A - Represent abcdsix, a base-six numeral, in expanded...Ch. 3.1A - In what base does 12b+26b=41b?Ch. 3.1A - Prob. 30ACh. 3.1A - Prob. 31ACh. 3.1A - You are asked to distribute 900 in prize money....Ch. 3.1A - Prob. 33ACh. 3.1A - For each of the following, find b if possible. If...Ch. 3.1A - Write the following numerals in the indicated base...Ch. 3.1A - Prob. 36ACh. 3.1B - Write the following in words. a. 253,243,810 b....Ch. 3.1B - Indicate which digit in 2,345,925 has place value....Ch. 3.1B - For each of the following base-ten numerals, give...Ch. 3.1B - Rewrite each of the following as a base-ten...Ch. 3.1B - Prob. 5ACh. 3.1B - How many digits are there in the standard form of...Ch. 3.1B - A two-digit number has the property that the units...Ch. 3.1B - Prob. 8ACh. 3.1B - Prob. 9ACh. 3.1B - On the United States one-dollar bill, the number...Ch. 3.1B - Write each of the following numerals in Roman...Ch. 3.1B - Prob. 12ACh. 3.1B - Prob. 13ACh. 3.1B - Assessment Write the base-three numeral for the...Ch. 3.1B - Write the first 10 counting numerals for each of...Ch. 3.1B - How many different digits are used in base...Ch. 3.1B - Write 2022three in expanded form and then convert...Ch. 3.1B - Prob. 18ACh. 3.1B - Find the numeral preceding and succeeding each of...Ch. 3.1B - What, if anything, is wrong with the following? a....Ch. 3.1B - What is the fewest number of base-three blocks...Ch. 3.1B - Draw base-two blocks to represent 1001two.Ch. 3.1B - Prob. 23ACh. 3.1B - Prob. 24ACh. 3.1B - Assessment What is the fewest number of multibase...Ch. 3.1B - Convert each of the following base-ten numerals to...Ch. 3.1B - Write each of the following numerals in base ten....Ch. 3.1B - Represent abcdeight as a base-ten numeral in...Ch. 3.1B - In what base does 54b+45b=132b?Ch. 3.1B - Prob. 30ACh. 3.1B - Prob. 31ACh. 3.1B - Who Wants the Money, a game show, distributes...Ch. 3.1B - A coffee shop sold 1 cup, 1 pint and 1 quart of...Ch. 3.1B - For each of the following numerals, find digit b,...Ch. 3.1B - Using only the number keys on a calculator, fill...Ch. 3.1B - The English word MIX has value 1000 9 = 1009 in...Ch. 3.2 - In a survey of 52 students, 22 said they were...Ch. 3.2 - To find 9+7, a student says she thinks of 9+7 as...Ch. 3.2 - Explain in two different ways why if ab and c is a...Ch. 3.2 - When subtraction and addition appear in an...Ch. 3.2 - Explain whether it is important for elementary...Ch. 3.2 - Prob. 6MCCh. 3.2 - Explain how the model shown can be used to...Ch. 3.2 - Prob. 8MCCh. 3.2 - Prob. 9MCCh. 3.2 - Prob. 10MCCh. 3.2 - Describe any model not in this text that you could...Ch. 3.2 - Prob. 12MCCh. 3.2 - a. Create a word problem in which the set model...Ch. 3.2 - Prob. 14MCCh. 3.2 - Prob. 15MCCh. 3.2 - Prob. 16MCCh. 3.2 - Prob. 17MCCh. 3.2 - A student says asks why we use subtraction to...Ch. 3.2 - Prob. 19MCCh. 3.2 - Prob. 20MCCh. 3.2 - Prob. 21MCCh. 3.2 - A first grader claims that 24=2 because you just...Ch. 3.2 - Prob. 23MCCh. 3.2 - Prob. 24MCCh. 3.2 - Prob. 25MCCh. 3.2 - Prob. 26MCCh. 3.2 - Prob. 27MCCh. 3.2 - Prob. 28MCCh. 3.2 - 8=21 What number should be put in the box to make...Ch. 3.2 - Prob. 2NAEPCh. 3.2A - A student uses the counting on strategy for adding...Ch. 3.2A - Prob. 2ACh. 3.2A - If n(A)=3, n(B)=5 and n(AB)=6, what do you know...Ch. 3.2A - Give an example to show why, in the definition of...Ch. 3.2A - If n(A)=3, n(AB)=6, answer the following...Ch. 3.2A - Which of the following sets are closed under...Ch. 3.2A - Prob. 7ACh. 3.2A - Prob. 8ACh. 3.2A - Each of the following equations illustrates an...Ch. 3.2A - Each of the following illustrates a property of...Ch. 3.2A - Prob. 11ACh. 3.2A - Prob. 12ACh. 3.2A - Find the next three terms in each of the following...Ch. 3.2A - 32. Complete the following magic square using the...Ch. 3.2A - If A, B, and C each stand for a different single...Ch. 3.2A - A special domino set contains all number pairs...Ch. 3.2A - a. At a volleyball game, the players stood in a...Ch. 3.2A - Rewrite each of the following subtraction problems...Ch. 3.2A - Illustrate 85=3 using each of the following...Ch. 3.2A - Prob. 20ACh. 3.2A - a. Solve for x in each of the following equations....Ch. 3.2A - a. One fact in a fact family is 6+5=11.What are...Ch. 3.2A - Prob. 23ACh. 3.2A - Show that each of the following is true. Give a...Ch. 3.2A - Find the solution for x in the set W for each of...Ch. 3.2A - Kelsey has a marbles, Gena has b marbles, and Noah...Ch. 3.2A - Prob. 27ACh. 3.2B - A student uses the counting on strategy for adding...Ch. 3.2B - Prob. 2ACh. 3.2B - Prob. 3ACh. 3.2B - Prob. 4ACh. 3.2B - If n(B)=4, and n(AB)=6, answer the following. a....Ch. 3.2B - Explain whether the following sets are closed...Ch. 3.2B - Prob. 7ACh. 3.2B - Prob. 8ACh. 3.2B - Each of the following equations is an example of...Ch. 3.2B - Each of the following illustrates a properties of...Ch. 3.2B - Prob. 11ACh. 3.2B - Prob. 12ACh. 3.2B - Find the next three terms in each of the following...Ch. 3.2B - Complete the following magic square using the...Ch. 3.2B - If A,B,C, and D each represent a different single...Ch. 3.2B - a. A domino set contains all number pairs from...Ch. 3.2B - If, ab,cb,dc,andced, order the letters from the...Ch. 3.2B - Prob. 18ACh. 3.2B - Illustrate 73=4 using each of the following...Ch. 3.2B - Write a word problem that corresponds to each of...Ch. 3.2B - Use the doubles plus strategy for adding the...Ch. 3.2B - Prob. 22ACh. 3.2B - Prob. 23ACh. 3.2B - Show that each of the following is true. Give a...Ch. 3.2B - Find the solution in the set W for each of the...Ch. 3.2B - Prob. 26ACh. 3.2B - Prob. 27ACh. 3.3 - MATHEMATICAL CONNECTIONS Why is an odd number...Ch. 3.3 - MATHEMATICAL CONNECTIONS Can 0 be the identity for...Ch. 3.3 - MATHEMATICAL CONNECTIONS Suppose you forgot the...Ch. 3.3 - Is xx always equal to 1? Explain your answer.Ch. 3.3 - MATHEMATICAL CONNECTIONS Is xx ever equal to x?...Ch. 3.3 - MATHEMATICAL CONNECTIONS Describe all pairs of...Ch. 3.3 - In the Common Core Standards quote at the...Ch. 3.3 - MATHEMATICAL CONNECTIONS Explain how the...Ch. 3.3 - Prob. 9MCCh. 3.3 - MATHEMATICAL CONNECTIONS Describe a real-life...Ch. 3.3 - Prob. 11MCCh. 3.3 - Enter a natural number less than 20 on a...Ch. 3.3 - Suppose a student argued that 00=1 because every...Ch. 3.3 - Sue claims the following is true by the...Ch. 3.3 - A student claims that for all whole numbers...Ch. 3.3 - Prob. 16MCCh. 3.3 - Amy claims that no finite set of whole numbers is...Ch. 3.3 - Linda performed the following calculations....Ch. 3.3 - Prob. 19MCCh. 3.3 - Prob. 20MCCh. 3.3 - Prob. 21MCCh. 3.3 - Prob. 22MCCh. 3.3 - Prob. 1NAEPCh. 3.3A - Show that 34=12 using each of the following...Ch. 3.3A - If A={a,b} and B={x,y,z}, find each of the...Ch. 3.3A - What multiplication is suggested by the following...Ch. 3.3A - For each of the following, find, if possible, a...Ch. 3.3A - Prob. 5ACh. 3.3A - a. If 5 is removed from the set of whole numbers,...Ch. 3.3A - Rename each of the following using distributive...Ch. 3.3A - Place parentheses, if needed, to make each of the...Ch. 3.3A - Using the distributive property of multiplication...Ch. 3.3A - For each of the following equation, find whole...Ch. 3.3A - A sporting goods store has designs for 6 shirts, 4...Ch. 3.3A - Which property is illustrated in each of the...Ch. 3.3A - Prob. 13ACh. 3.3A - The product 614 can be found by thinking of the...Ch. 3.3A - Use the distributive property of multiplication...Ch. 3.3A - Show that (a+b)2=a2+2ab+b2 using a. the...Ch. 3.3A - If a and b are whole numbers with ab, use the...Ch. 3.3A - Use the property (a+b)2=a2+2ab+b2 to compute the...Ch. 3.3A - Prob. 19ACh. 3.3A - Factor each of the following expressions. a. xyy2...Ch. 3.3A - Rewrite each of the following division problems as...Ch. 3.3A - If /108/a=b then find 108/b.Ch. 3.3A - Write the complete fact family for 72/8=9.Ch. 3.3A - Think of a number. Multiply it by 5.Add 5. Divide...Ch. 3.3A - Show that, in general, each of the following is...Ch. 3.3A - Suppose all of the operations result in whole...Ch. 3.3A - Find the solution for each of the following...Ch. 3.3A - Prob. 28ACh. 3.3A - Is it possible to find a whole number less than...Ch. 3.3A - Students were divided into 10 teams with 12 on...Ch. 3.3A - In each of the following, tell what computation...Ch. 3.3A - Prob. 32ACh. 3.3A - Prob. 33ACh. 3.3A - Prob. 34ACh. 3.3A - Prob. 35ACh. 3.3B - Prob. 1ACh. 3.3B - ASSESSMENT If A={a,b,c,d} and B={x,y,z}, find each...Ch. 3.3B - ASSESSMENT What multiplication is suggested by the...Ch. 3.3B - ASSESSMENT For each of the following, find, if...Ch. 3.3B - ASSESSMENT Determine if the following sets are...Ch. 3.3B - Prob. 6ACh. 3.3B - ASSESSMENT Rename each of the following using the...Ch. 3.3B - Place parentheses, if needed, to make each of the...Ch. 3.3B - Prob. 9ACh. 3.3B - For each of the following equations, find whole...Ch. 3.3B - A new car comes in 5 exterior colors and 3...Ch. 3.3B - ASSESSMENT Which property of whole numbers is...Ch. 3.3B - Prob. 13ACh. 3.3B - The product 524 can be found by thinking of the...Ch. 3.3B - Prob. 15ACh. 3.3B - ASSESSMENT Show that if bc, then a(bc)=abac, using...Ch. 3.3B - ASSESSMENT Use the formula (a+b)(ab)=a2b2 to...Ch. 3.3B - Prob. 19ACh. 3.3B - Factor each of the following: a. xyy b....Ch. 3.3B - Rewrite each of the following division problems as...Ch. 3.3B - If 64a=b, then find 64b.Ch. 3.3B - Think of a number. Multiply it by 2. Add 2. Divide...Ch. 3.3B - Show that, in general, each of the following is...Ch. 3.3B - Suppose all operations result in whole numbers....Ch. 3.3B - Find the solution of each of the following...Ch. 3.3B - Prob. 28ACh. 3.3B - Jonah has a large collection of marbles. He...Ch. 3.3B - Students were divided into eight teams with nine...Ch. 3.3B - In each of the following, tell what computation...Ch. 3.3B - Prob. 32ACh. 3.3B - Prob. 33ACh. 3.3B - Prob. 34ACh. 3.3B - Prob. 35ACh. 3.4 - Discuss the merit of the following expanded...Ch. 3.4 - Prob. 2MCCh. 3.4 - Explain why the scratch addition algorithm works.Ch. 3.4 - Prob. 4MCCh. 3.4 - Prob. 5MCCh. 3.4 - Is the front-end estimate for addition before...Ch. 3.4 - In the new textbooks, there is an emphasis on...Ch. 3.4 - Prob. 8MCCh. 3.4 - Prob. 9MCCh. 3.4 - Give several examples from real-world situations...Ch. 3.4 - a. Give a numerical example of when front-end...Ch. 3.4 - Prob. 12MCCh. 3.4 - Prob. 13MCCh. 3.4 - Prob. 14MCCh. 3.4 - Tira, a fourth grader, performs addition by adding...Ch. 3.4 - Prob. 16MCCh. 3.4 - To find 6819, Joe began by finding 61 and then 98...Ch. 3.4 - Prob. 18MCCh. 3.4 - Prob. 19MCCh. 3.4 - A child is asked to compute 7+2+3+8+11 and writes...Ch. 3.4 - When Richie was asked to round 2568 to the nearest...Ch. 3.4 - When Ashley was asked to round 345 to the nearest...Ch. 3.4 - Pauli subtracted 549 from 5004 as follows. How...Ch. 3.4 - Molly computed 26148 by first subtracting 50 from...Ch. 3.4 - Prob. 25MCCh. 3.4 - Prob. 26MCCh. 3.4 - Prob. 27MCCh. 3.4 - Prob. 28MCCh. 3.4 - Prob. 29MCCh. 3.4 - Prob. 30MCCh. 3.4 - Prob. 31MCCh. 3.4 - Prob. 1NAEPCh. 3.4 - Prob. 2NAEPCh. 3.4 - Prob. 3NAEPCh. 3.4 - Prob. 4NAEPCh. 3.4A - Find the missing digits in each of the following...Ch. 3.4A - Make a drawing similar to the one in Figure 33 to...Ch. 3.4A - Place the digits 7, 6, 8, 3, 5, and 2 in the boxes...Ch. 3.4A - In the following problem, the sum is correct but...Ch. 3.4A - Use the equal-additions approach to compute each...Ch. 3.4A - Janet worked her addition problems by placing the...Ch. 3.4A - Analyze the following computations. Explain what...Ch. 3.4A - Toms diet allows only 1500 calories per day. For...Ch. 3.4A - Prob. 9ACh. 3.4A - In each of the following addition problems,...Ch. 3.4A - Use the lattice algorithm to perform each of the...Ch. 3.4A - Perform each of the following operations using the...Ch. 3.4A - Construct an addition table for base eight and...Ch. 3.4A - Perform each of the following operations: a....Ch. 3.4A - The following is a supermagic square....Ch. 3.4A - Use scratch addition to perform the following...Ch. 3.4A - Determine what is wrong with the following...Ch. 3.4A - Find the number to put in the blank to make each...Ch. 3.4A - Prob. 20ACh. 3.4A - Prob. 21ACh. 3.4A - Prob. 22ACh. 3.4A - Compute each of the following mentally and...Ch. 3.4A - Use breaking up and bridging to compute each of...Ch. 3.4A - Prob. 25ACh. 3.4A - Prob. 26ACh. 3.4A - Prob. 27ACh. 3.4A - Prob. 28ACh. 3.4A - Use front-end estimation with adjustment to...Ch. 3.4A - Use the range strategy to estimate each of the...Ch. 3.4A - Suppose you had a balance of 3287 in your checking...Ch. 3.4A - Prob. 33ACh. 3.4A - Prob. 34ACh. 3.4B - Find the missing digits in each of the following...Ch. 3.4B - Make an appropriate drawing like the one in Figure...Ch. 3.4B - Place the digits 7,6,8,3,5, and 2 in the boxes to...Ch. 3.4B - In the following problem, the sum is correct but...Ch. 3.4B - Prob. 5ACh. 3.4B - Prob. 6ACh. 3.4B - Analyze the following computations. Explain what...Ch. 3.4B - George is cooking a meal for Thanksgiving. He can...Ch. 3.4B - Prob. 9ACh. 3.4B - In each of the following addition problems justify...Ch. 3.4B - Use the lattice algorithm to perform each of the...Ch. 3.4B - Perform each of the following operations using the...Ch. 3.4B - Prob. 13ACh. 3.4B - 14. Perform each of the following operations 2 c =...Ch. 3.4B - Prob. 15ACh. 3.4B - Use scratch addition to perform the following...Ch. 3.4B - Determine what is wrong with the following...Ch. 3.4B - Find the number to put in the blank to make each...Ch. 3.4B - The Hawks played the Elks in a basketball game....Ch. 3.4B - a. Place the numbers 24 through 32 in the...Ch. 3.4B - What is the greatest possible addend that can be...Ch. 3.4B - Compute each of the following mentally. a....Ch. 3.4B - Prob. 23ACh. 3.4B - Prob. 24ACh. 3.4B - Use trading-off to compute each of the following...Ch. 3.4B - Compute each of the following using the adding up...Ch. 3.4B - Prob. 27ACh. 3.4B - Estimate each answer by rounding. a. 937+28 b....Ch. 3.4B - Use front-end estimation with adjustment to...Ch. 3.4B - a. Would the clustering strategy of estimation be...Ch. 3.4B - Use the range strategy to estimate each of the...Ch. 3.4B - Suppose you had a balance of 1237 in your checking...Ch. 3.4B - In each of the following, answer the question...Ch. 3.4B - The attendance at a Country Fair for six days...Ch. 3.5 - MATHEMATICAL CONNECTIONS How would you explain to...Ch. 3.5 - MATHEMATICAL CONNECTIONS What happens when you...Ch. 3.5 - Pick a number Double it. Multiply the result by 3....Ch. 3.5 - Prob. 4MCCh. 3.5 - Prob. 5MCCh. 3.5 - For the given computation, answer the following...Ch. 3.5 - Prob. 7MCCh. 3.5 - If a student presented a new algorithm for...Ch. 3.5 - MATHEMATICAL CONNECTIONS Dina calculated each of...Ch. 3.5 - Prob. 10MCCh. 3.5 - a. Without actually finding the answers determine...Ch. 3.5 - Prob. 12MCCh. 3.5 - Prob. 13MCCh. 3.5 - A student divides as follows. How do you help?Ch. 3.5 - A student asks how you can find the quotient and...Ch. 3.5 - A student claim that to divide a number with the...Ch. 3.5 - a. A student notices that 39+41=40+40 and wonders...Ch. 3.5 - Prob. 18MCCh. 3.5 - What errors do you think the student is making in...Ch. 3.5 - A student performs the following computation....Ch. 3.5 - Prob. 21MCCh. 3.5 - Prob. 22MCCh. 3.5 - Prob. 23MCCh. 3.5 - At the beginning of a trip, the mileage odometer...Ch. 3.5 - Prob. 25MCCh. 3.5 - Prob. 1NAEPCh. 3.5 - Explain why subtraction of terminating decimals...Ch. 3.5 - Prob. 3NAEPCh. 3.5A - Prob. 1ACh. 3.5A - a. Which is greater, 280+280 or 2100? Why? b....Ch. 3.5A - Illustrate how to use base-ten blocks to compute...Ch. 3.5A - Assessment Fill in the missing numbers in each of...Ch. 3.5A - Perform the following multiplications using the...Ch. 3.5A - Prob. 7ACh. 3.5A - a. Use the distributive property of multiplication...Ch. 3.5A - Prob. 9ACh. 3.5A - Assessment Answer the following questions based on...Ch. 3.5A - On a 14 day vacation, Glenn increased his caloric...Ch. 3.5A - Prob. 12ACh. 3.5A - Prob. 13ACh. 3.5A - Place the digits 4,5,7, and 3 in the boxes ____ to...Ch. 3.5A - Using a calculator, Ralph multiplied by 10 when he...Ch. 3.5A - Consider the following multiplications. Notice...Ch. 3.5A - Dan has 4520 pennies in three boxes. He says that...Ch. 3.5A - Prob. 18ACh. 3.5A - Prob. 19ACh. 3.5A - Give reasons for each of the following steps....Ch. 3.5A - Prob. 21ACh. 3.5A - Prob. 22ACh. 3.5A - Use lattice multiplication to compute...Ch. 3.5A - Find the least values of a and b such that...Ch. 3.5A - Place the digits 7, 6, 8, and 3 in the boxes to...Ch. 3.5A - Prob. 26ACh. 3.5A - A car trip took 8 hr of driving at an average of...Ch. 3.5A - A theater has 38 rows with 23 seats in each row....Ch. 3.5A - Without computing, tell which of the following...Ch. 3.5A - Prob. 30ACh. 3.5A - Use your calculator to calculate...Ch. 3.5A - A student uses front-end estimation to estimate...Ch. 3.5B - ASSESSMENT Simplify each of the following...Ch. 3.5B - ASSESSMENT a. Which is greater, l 220+220 or 221?...Ch. 3.5B - ASSESSMENT Illustrate how to use base-ten blocks...Ch. 3.5B - The following model illustrates 1312. a. Explain...Ch. 3.5B - ASSESSMENT Fill in the missing numbers in the...Ch. 3.5B - Assessment Perform the following multiplications...Ch. 3.5B - The following chart gives average water usage for...Ch. 3.5B - ASSESSMENT a. Use a distributive property of...Ch. 3.5B - Prob. 9ACh. 3.5B - Answer the following questions based on the...Ch. 3.5B - Prob. 11ACh. 3.5B - Sue purchased a 30,000 life-insurance policy at...Ch. 3.5B - Place the digits 7, 6, 8, and 3 in the boxes to...Ch. 3.5B - Using a calculator, Jody multiplied by 5 when she...Ch. 3.5B - A student wrote the following addition problem to...Ch. 3.5B - ASSESSMENT Debbie has 340 dimes in three boxes....Ch. 3.5B - Prob. 18ACh. 3.5B - ASSESSMENT Discuss possible error patterns in each...Ch. 3.5B - ASSESSMENT Give reasons for each of the following...Ch. 3.5B - a. Find all the whole numbers that have remainder...Ch. 3.5B - Prob. 22ACh. 3.5B - Assessment Use lattice multiplication to compute...Ch. 3.5B - ASSESSMENT Find the least values of a and b such...Ch. 3.5B - ASSESSMENT A car trip took 6hours at an average of...Ch. 3.5B - ASSESSMENT About 3540 calories must be burned to...Ch. 3.5B - Without computing, tell which of the following...Ch. 3.5B - In each of the following, determine if the...Ch. 3.5B - Use your calculator to multiply several two-digit...Ch. 3.5B - A student users front-end estimation to estimation...Ch. 3.CR - Prob. 1CRCh. 3.CR - Prob. 2CRCh. 3.CR - Prob. 3CRCh. 3.CR - Simplify each of the following products, if...Ch. 3.CR - Write the base-three numeral for the base-three...Ch. 3.CR - What is the fewest number of base-three blocks...Ch. 3.CR - Prob. 7CRCh. 3.CR - Prob. 8CRCh. 3.CR - Prob. 9CRCh. 3.CR - Prob. 10CRCh. 3.CR - Prob. 11CRCh. 3.CR - Write 128 in each of the following bases. a. Five...Ch. 3.CR - Prob. 13CRCh. 3.CR - Prob. 14CRCh. 3.CR - Prob. 15CRCh. 3.CR - Prob. 16CRCh. 3.CR - Prob. 17CRCh. 3.CR - Prob. 18CRCh. 3.CR - Prob. 19CRCh. 3.CR - Prob. 20CRCh. 3.CR - Prob. 21CRCh. 3.CR - Prob. 22CRCh. 3.CR - Prob. 23CRCh. 3.CR - Prob. 24CRCh. 3.CR - Prob. 25CRCh. 3.CR - Prob. 26CRCh. 3.CR - Prob. 27CRCh. 3.CR - Prob. 28CRCh. 3.CR - Prob. 29CRCh. 3.CR - Prob. 30CRCh. 3.CR - Prob. 31CRCh. 3.CR - Prob. 32CRCh. 3.CR - Prob. 33CRCh. 3.CR - Prob. 34CRCh. 3.CR - Prob. 35CRCh. 3.CR - Prob. 36CRCh. 3.CR - Prob. 37CRCh. 3.CR - Prob. 38CRCh. 3.CR - Prob. 39CRCh. 3.CR - Prob. 40CRCh. 3.CR - Prob. 41CRCh. 3.CR - Prob. 42CRCh. 3.CR - Recall that addition problems like 3478+521 can be...Ch. 3.CR - Prob. 44CRCh. 3.CR - Prob. 45CRCh. 3.CR - Prob. 46CRCh. 3.CR - Prob. 47CRCh. 3 - NOW TRY THIS a. Trade base-ten blocks as shown in...Ch. 3 - Prob. 2NTCh. 3 - Prob. 3NTCh. 3 - a. Write CCXLIX as a Hindu-Arabic numeral. b. Use...Ch. 3 - Prob. 5NTCh. 3 - Now Try this 3 If the sets in the preceding...Ch. 3 - Now Try this 4 A common error is that students...Ch. 3 - Prob. 8NTCh. 3 - Prob. 9NTCh. 3 - Prob. 10NTCh. 3 - Prob. 11NTCh. 3 - Which of the following properties hold for...Ch. 3 - Now Try this 12 Find a solution for each of the...Ch. 3 - Prob. 14NTCh. 3 - Prob. 15NTCh. 3 - NOW TRY THIS a. Build an addition table for base...Ch. 3 - Prob. 17NTCh. 3 - Prob. 18NTCh. 3 - Prob. 19NTCh. 3 - Prob. 20NT
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