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18 problems and Andreas solved 13 problems. How many more problems has Ivan solved than Andreas? (b) On Malea's 12-mile hike to Mirror Lake, she came to a sign that said she had 5 miles left to reach the lake. How far has Malea walke

18 problems and Andreas solved 13 problems. How many more problems has Ivan solved than Andreas? (b) On Malea's 12-mile hike to Mirror Lake, she came to a sign that said she had 5 miles left to reach the lake. How far has Malea walke

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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  1. For each of the following problems, which subtraction model take away, missing addend, comparison, or measurement corresponds best to that problem?

(a) Ivan solved 18 problems and Andreas solved 13 problems. How many more problems has Ivan solved than Andreas?

(b) On Malea's 12-mile hike to Mirror Lake, she came to a sign that said she had 5 miles left to reach the lake. How far has Malea walked so far

 

2.) In an attempt to do a three-digit subtraction, Yuan writes

                                                                            706

                                                                           -327

                                                                            421

(a) Identify what she is doing incorrectly.

 (b) How will you help correct her error

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