2.NBT.7: Adding and Subtracting Within 1000

Challenge Worksheet
I can add and subtract within 1000.

Problem 1

Find the missing number: 456 + _____ = 789

Explain your strategy.

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Problem 2

Find the missing number: 456 + _____ = 789

Explain your strategy.

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Problem 3

Find the missing number: 456 + _____ = 789

Explain your strategy.

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Problem 4

Solve: 391 + 192 - 50 = _____

Show your work step by step.

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Problem 5

Solve: 313 + 225 - 144 = _____

Show your work step by step.

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Problem 6

Solve: 358 + 192 - 132 = _____

Show your work step by step.

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Problem 7

A store had 675 items. They sold 289 items and received 156 new items. How many items do they have now?

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Problem 8

A store had 675 items. They sold 289 items and received 156 new items. How many items do they have now?

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Problem 9

A store had 675 items. They sold 289 items and received 156 new items. How many items do they have now?

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Problem 10

A store had 675 items. They sold 289 items and received 156 new items. How many items do they have now?