Representing and solving problems involving addition and subtraction within 20

10 + 5 =

• 13

• 14

• 12

• 15

9 + 7

• 16

• 15

• 2

• 17

Simone has 3 shells.  She finds 4 more shells to add to her collection.  How many shells does she have

• 12
• 1
• 7
• 8

9 = 7 + ___

Find the sum.

4 + 5

• 7

• 8

• 9

9+ 6 = 

• 16
• 15
• 12
• 3

Find the sum of 16 and 3?

• 19

• 18

• 17

• 20

14 + 2 =

• 16

• 17

6+____=10

• 4

• 6

• 14

• 16

10s + 5s =