Rounding to the nearest 10
155?
160
142?
100
3 groups of 4?
12
8x2?
16
10/2=?
5
267?
270
389?
400
2x6?
12
9x?=27
3
24/6=?
4
555?
560
478?
500
9x9?
81
?x4+5=25
5
49/7=?
7
687?
690
1,761?
1,800
12x2?
7x?-1=20
3
72/9=?
1,511?
1,510
2,804?
2,800
12x12?
144
?x9+2=83
9
121/11=?
11