Addition
2 + 7
9
10 - 3
7
100 x 0
0
What's the missing number? 11, 12, ___, 14, 15
13
15 + 30
45
14 + 6
20
19 - 11
8
3 x 5
15
What's the missing number? 10, 20, 30, ___, 50
40
20 - 8
12
30 + 44
74
60-45
15
4 x 3
What's the missing number? 5, 10, 15, ___, 25, 30
20
What's the missing number? 19, 17, 15, ___, 11, 9
13
60 + 88
148
74 - 13
61
7 x 6
42
What's the missing number? 3, 5, 7, ___, 11, 13, 15
9
6 x 4
24
235 + 465
700
984 - 340
644
8 x 7
56
What's the missing number? 1, 5, 9, 13, ___, 21
17
10 x 10
100