Addition Without Regrouping
10 + 15 =
25
10 - 10 =
0
15 + 27 =
42
37 - 28 =
9
10 + 75 =
85
29 + 15
44
85 - 35 =
50
54 + 77 =
131
32 - 29 =
3
90 - 80 =
70
192 + 103 =
295
97 - 24 =
73
809 + 234
1043
36 - 18 =
18
443 + 268 =
711
456 + 402
858
378 - 227 =
598 + 599 =
1197
75 - 16 =
59
70 - 63 =
7
360 + 330 =
690
690 - 120 =
570
230 + 780 =
1010
92 - 89 =
3
315 + 287 =
602