Addition (no regrouping)
12+7=
19
32-10=
22
skip count by 2s to 14
2,4,6,8,10,12,14
24
24-8=
16
24+32=
56
57-23=
34
skip count by 5s to 30
5,10,15,20,25,30
24+16=
40
36-18=
18
177+12=
89
367-12=
355
skip count by 3s to 30
3,6,9,12,15,18,21,24,27,30
35+45=
80
32-19=
13
876
456-123=
333
skip count by 10s to 100
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
93+29=
122
82-54=
28
345+523=
868
987-573=
414
skip count by 6s to 36
6, 12, 18, 24, 30, 26
189+28=
217
132-25=
107