5. Give an example of an addition problem with three addends that would be much easier to solve (mentally) by using the commutative property of addition.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.1: Counting
Problem 92E: DISCUSS: Complementary Combinations Without performing any calculations, explain in words Why the...
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5. Give an example of an addition problem with three addends that would be much easier to solve
(mentally) by using the commutative property of addition.
IF
6. Kenisha was given this problem:
Benito is 5 ft 1 in tall. Anastasia is 4 ft 10 in tall. How much taller is Benito than Anastasia?
Below is Kenisha's work. Is Kenisha right? If not, explain what is wrong with her method, and
show how to modify her method of regrouping to make it right (rather than starting from
scratch).
这中イin
-4 A 10 in
I in
Focus
Transcribed Image Text:5. Give an example of an addition problem with three addends that would be much easier to solve (mentally) by using the commutative property of addition. IF 6. Kenisha was given this problem: Benito is 5 ft 1 in tall. Anastasia is 4 ft 10 in tall. How much taller is Benito than Anastasia? Below is Kenisha's work. Is Kenisha right? If not, explain what is wrong with her method, and show how to modify her method of regrouping to make it right (rather than starting from scratch). 这中イin -4 A 10 in I in Focus
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