Addition
28+17
45
43-23
20
Round 47 to the nearest 10
50
2x8
16
345+578
923
42+57
99
74-53
21
Round 83 to the nearest 10
80
3x5
15
547-433
114
67+53
120
87-66
21
Round 123 to the nearest 100
100
4x7
28
Round 645 to the nearest 10
650
134+77
211
175-58
117
Round 437 to the nearest 100
400
5x9
45
Round 882 to the nearest 10
890
162+98
260
139-79
60
Round 761 to the nearest 100
800
6x4
24
6x6
36