I can explain why addition and subtraction strategies work.
Problem 1
Solve 45 + 18 and explain how you found your answer.
Hint: You can break apart numbers or use place value. Explain your steps.
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Problem 2
Solve 28 + 24 and explain how you found your answer.
Hint: You can break apart numbers or use place value. Explain your steps.
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Problem 3
Solve 35 + 20 and explain how you found your answer.
Hint: You can break apart numbers or use place value. Explain your steps.
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Problem 4
Solve 28 + 24 and explain how you found your answer.
Hint: You can break apart numbers or use place value. Explain your steps.
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Problem 5
Solve 33 + 23 and explain how you found your answer.
Hint: You can break apart numbers or use place value. Explain your steps.
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Problem 6
Solve 50 - 23 and explain your strategy.
Hint: Describe each step you take to find the answer.
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Problem 7
Solve 75 - 35 and explain your strategy.
Hint: Describe each step you take to find the answer.
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Problem 8
Solve 73 - 35 and explain your strategy.
Hint: Describe each step you take to find the answer.
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Problem 9
Solve 55 - 24 and explain your strategy.
Hint: Describe each step you take to find the answer.
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Problem 10
Solve 80 - 21 and explain your strategy.
Hint: Describe each step you take to find the answer.