Connor was asked to solve the problem 39+25 twice, the first time when the problem was in a context of baseball cards, and the second time when the problem was not in a context. When Connor solved the problem the second time he described the process in these steps: 30+20 = 50 5+5+50 = 60 4+60 = 64 In the second step, how did Connor come up with adding 5+5 to 50? A. He made a mistake but still happened to find the correct sum. B. He decomposed the nine from 39 into five and four, and then added the five to the five from 25. C. He knew that nine and five was 14, which can be decomposed into 5+5+4. D. None of the above.
Connor was asked to solve the problem 39+25 twice, the first time when the problem was in a context of baseball cards, and the second time when the problem was not in a context. When Connor solved the problem the second time he described the process in these steps: 30+20 = 50 5+5+50 = 60 4+60 = 64 In the second step, how did Connor come up with adding 5+5 to 50? A. He made a mistake but still happened to find the correct sum. B. He decomposed the nine from 39 into five and four, and then added the five to the five from 25. C. He knew that nine and five was 14, which can be decomposed into 5+5+4. D. None of the above.
Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter1: Foundations
Section1.5: Visualize Fractions
Problem 1.152TI: Translate the English phrase into an algebraic expression: the quotient of the sum of p and q, and r
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Connor was asked to solve the problem 39+25 twice, the first time when the problem was in a context of baseball cards, and the second time when the problem was not in a context. When Connor solved the problem the second time he described the process in these steps:
|
30+20
|
=
|
50
|
|
5+5+50
|
=
|
60
|
|
4+60
|
=
|
64
|
In the second step, how did Connor come up with adding
5+5 to 50?
He made a mistake but still happened to find the correct sum.
He decomposed the nine from 39 into five and four, and then added the five to the five from 25.
He knew that nine and five was 14, which can be decomposed into
5+5+4.
None of the above.
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