addition
4+6
10
4x4
16
10-4
6
4x=8
2
40+15
55
50x3
150
65-20
45
2x=10
5
67+4
71
12x2
24
100-30
70
12x=24
2
168+20
188
6x5
30
if there are ten apples in a tree and 4 fall how many are left?
6
5x=15
3
1056+63
1119
300x3
900
500-400
10x=100
10