2.NBT.5: Adding and Subtracting Within 100

Challenge Worksheet
I can fluently add and subtract within 100.

Problem 1

Find the missing number: 47 + _____ = 83

Explain your strategy.

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Problem 2

Find the missing number: 47 + _____ = 83

Explain your strategy.

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Problem 3

Find the missing number: 47 + _____ = 83

Explain your strategy.

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Problem 4

Solve: 57 + 29 - 13 = _____

Show your work step by step.

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Problem 5

Solve: 44 + 40 - 15 = _____

Show your work step by step.

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Problem 6

Solve: 52 + 35 - 13 = _____

Show your work step by step.

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Problem 7

Create two different addition problems that both equal 75. Show that your answers are correct.

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Problem 8

Create two different addition problems that both equal 75. Show that your answers are correct.

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Problem 9

Create two different addition problems that both equal 75. Show that your answers are correct.

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Problem 10

Create two different addition problems that both equal 75. Show that your answers are correct.