Addition
Addition with Regrouping
Tens and Ones
100
16+12
28
100
12+9
21
100
3 tens 1 one
31
200
30+25
55
200
29+15
44
200
5 ones 5 tens
55
300
42 +21
63
300
35+28
63
300
33
400
16+42
58
400
24 + 29
53
400
46