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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
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