Mastering Addition and Subtraction

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

There were 49 boys on the stairs. Then 37 more boys joined them. How many boys are there altogether?

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CCSS.2.NBT.B.6

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CCSS.2.OA.A.1

Coco the Clown was making balloon animals at a birthday party. 26 children wanted dog balloon animals and 17 wanted bears. How many more dog balloon animals were made than bears?

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CCSS.2.OA.A.1

There are 33 birds in a tall tree. 16 birds fly away. How many birds left on the tree?

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CCSS.2.OA.A.1

Bobby had 24 colored pencils. He lost 16 of them. How many colored pencils does Bobby have left?

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CCSS.2.OA.A.1

83-58

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

71 - 53 = ________

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Coco the Clown was making balloon animals at a birthday party. 26 children wanted dog balloon animals and 17 wanted bears. How many balloon animals did Coco the Clown make at the party?

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CCSS.2.OA.A.1

Miss Bongard gave Jashenid 27 problems to solve on Monday, 29 to solve on Tuesday. How many problems did Jashenid solve so far?

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CCSS.2.OA.A.1