Unit 5 open response
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Last updated about 5 years ago
4 questions
5
Sonja is learning how to use more efficient strategies for multiplication. She learned about adding or subtracting a group, doubling, and near squares.
She used the adding-a-group strategy to solve 6 x 7 = ?. She explained:"I will use the helper fact 5 x 7. I know that 5 x 7 = 35. I can add one more group of 7 to 35 to get 42. I now have 6 groups of 7, so I know 6 x 7 = 42.
Use a picture to show how Sonja solved the problem.
Sonja is learning how to use more efficient strategies for multiplication. She learned about adding or subtracting a group, doubling, and near squares.
She used the adding-a-group strategy to solve 6 x 7 = ?. She explained:
"I will use the helper fact 5 x 7. I know that 5 x 7 = 35. I can add one more group of 7 to 35 to get 42. I now have 6 groups of 7, so I know 6 x 7 = 42.
Use a picture to show how Sonja solved the problem.
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