Adding and Subtracting within 100

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79

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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100

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CCSS.2.NBT.B.5

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28

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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70

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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89

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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What is the sum of two numbers?

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The result of adding two numbers together.

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CCSS.1.OA.A.1

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What is subtraction?

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The process of taking one number away from another.

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CCSS.2.OA.A.1

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What is the difference between addition and subtraction?

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Addition combines numbers, while subtraction removes one number from another.

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CCSS.1.OA.A.1

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75

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CCSS.2.NBT.B.5

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45

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CCSS.2.NBT.B.5