Mastering Addition and Subtraction

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

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?

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

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

83-58

71 - 53 = ________

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?

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