Addition
20 + 45
65
500 - 250
250
12 x 11
132
132/12
11
20/10
2
33 + 65
98
9000 - 2000
7000
12 x 4
48
81/9
9
12 x 12
144
48 + 50
98
200 - 20
180
100 x 2
200
120/4
30
100 x 5
500
9 + 10
19
29 - 13
16
250 x 10
2,500
10/10
1
9 x 9 x 9
729
10,000 + 500
10,500
200 - 100
100
9 x 10
90
42 / 7
6
10/5 + 100/5
110/5 or 22