NC.1.OA.a Addition

I have a vase with 5 flowers. Mom put more flowers in the vase. Now I have 12 flowers in the vase. How many flowers did Mom put in the vase?

Which equation matches this problem?

• 5 + ____ = 12

• 12 + 5 = ___

Solve the problem:

5 + ___ = 12

Katya had sixteen balls. Her father bought her some more balls. Now she has 20. How many balls did her father buy for her?

What equation matches this problem?

• 16 + 20 = ___

• 16 + ___ = 20

Solve the problem:

16 + ___ = 20

Three cats are drinking milk. Some more cats come to drink milk. Now there's nine cats drinking milk. How many cats came to drink milk with the first three?

What equation matches this problem?

• 3 + 9 ___

• 3 + ___ = 9

Solve the problem:

3 + ___ = 9

12 pennies were in the piggy bank. Adele put some more pennies in the piggy bank. Now there are 20 pennies in the piggy bank. How many pennies did Adele put in the piggy bank? What equation matches this problem?

• 12 + ___ = 20

• 12 + 20 = ___

Solve the problem:

12 + ___ = 20

Jaire had 7 stars. His brother gave him some more. Now Jaire has 17 stars. How many stars did Jaire’s brother give him? What equation matches this problem?

• 7 + 17 = ___

• 7 + ___ = 17

Solve the problem:

7 + ___ = 17