Quiz Fractions, Decimals and Proportional Reasoning

Question 1 3 / 3 pts In order for children to fully understand rounding decimal fractions, they must have all of the following prerequisites except for : they must know the names for each place value. they must know the rules for when to go up to the next number and when to keep the same number. they must understand numbers’ relative positions on number lines. they must understand the meaning of decimal fractions. Question 2 3 / 3 pts What is the decimal equivalent of ⅞ ? 0.875 Question 3 3 / 3 pts John was asked whether or was closer to . Which of the following would be an accurate explanation? is left of and is to the right of . Since 3 and 4 are one unit apart, their average would be , which would be halfway. So, and are the same distance from . is from ½ which is equivalent to . is from , which is equivalent to , so is larger than , is closer to . is equivalent to and is equivalent to . Since is equivalent to , is closer to . is left of and is right of . is equivalent to 0.375 and is equivalent to 0.47, so is closer to . Question 4 3 / 3 pts “Lining up the decimal points” is the rote rule that children learn when adding and subtracting decimal fractions. The reasoning behind this rule is: children are following the “one place value at a time” rule when adding and subtracting, similar to what they followed with whole numbers. Question 5 3 / 3 pts Which model for subtraction of common fractions is illustrated by the problem below? Emily has ⅝ cup of flour but needs 1¼ cups to make bread. How much more flour does she need?