5 + 5 = 1010 + 1 = 11

5 + 5=1010 + 1 = 11

3 + 3= 66 + 1 = 7

8 + 8 = 1616 + 1 = 17

2 + 2 = 44 + 1 = 5

9 + 9 = 1818 + 1 = 19

1+1=22+1=3

7 + 7 = 1414 + 1 = 15

Remember if you have two neighbors on the number line,DOUBLE the LOWER number and add ONE to the SUM

7 + 8 = ? 5 + 6 = ? 4 + 3 = ?

9 + 8 = ? 2 + 3 = ? 5 + 4 = ?

10 + 9 = ? 1 + 2 = ?

Check your work below:

7 + 8 = 15 5 + 6 = 11 4 + 3 = 7

9 + 8 = 17 2 + 3 = 7 5 + 4 = 9

10 + 9 = 19 1 + 2 = 3