Add me up
                456 + 432 =
888
86 - 42 =
44
43 + 32 =
70
round me up or round me down...
63
down to 60
9 x 2=
18
561 + 987 +342 =
1890
67 - 36 =
31
46 + 22 =
70
round me up or round me down...
87
up to 90
6 x 4 =
24
24 + 142 + 754 =
920
72 - 48 =
24
89 + 57 =
140
round me up or round me down...
98
up to 100
5x 8 =
40
52 - 10 + 645 =
687
582 - 357
225
60 + 32 =
90
round me up or round me down (to the nearest tenth)
109
10 x 4 =
40
72 + 23 + 1,342 - 234 =
1,203
700 - 589 =
111
35 + 39 =
80
round me up or round me down to the nearest hundredth
637
9 x 7 =
63