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.
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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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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