12 + 9 =
9 ones + 5 ones =
0 tens and 4 ones + 18 =
6 + 7 =
70 + 16 =
6 tens and 3 ones + 8 ones =
7 + 8 =
1 ten 4 ones
2 tens 1 one
15
22
13
Hey! This isn't a regrouping problem!!!
7 tens 1 one
