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Math Unit 4. Lesson 3
By Jacelyn Vo
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Last updated about 5 years ago
3 questions
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1
Question 1
1.
Solve using an efficient strategy.
38 + 20 =
38 + 21 =
38 + 19 =
visibility
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1
1
Question 2
2.
Solve using an efficient strategy.
47 + 40 =
47 + 41 =
47 + 39 =
visibility
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Question 3
3.
Solve using an efficient strategy.
84 - 20 =
84 - 21 =
84 - 19 =
visibility
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