Addition
234 + 34
268
45 - 36
9
3 x 7
extra division
repeated addititon / subtraction
21
2 x 10
456 + 78
534
67 - 59
8
12 x 6
72
4 x 11
44
108 + 19
52-34
18
13 x 8
104
7 x 7
49
289 + 12
301
78-39
39
4 x 9
456 - 47
1000 + 220
1220
178 - 69
109
9x9
1,000 x 1
1,000