1
Balance the scale: 2 + __ 7 =
2
Balance the scale: 10 + 5 12 + ? =
3
Balance the scale: 9 + 10 13 + ? =
4
If left side 5 × 2, what does the right side equal to balance the scale? =
5
Balance the scale: 9 + __ 10 =
6
Balance the scale: 8 + 10 13 + ? =
7
Balance the scale: 6 + 8 8 + ? =
8
Balance the scale: 7 + 1 4 + ? =
9
If left side 5 × 7, what does the right side equal to balance the scale? =
10
If left side 9 × 9, what does the right side equal to balance the scale? =
11
Balance the scale: 2 + __ 6 =
12
Balance the scale: 4 + 7 10 + ? =
13
Balance the scale: 7 + __ 9 =
14
Balance the scale: 3 + 5 7 + ? =
15
If left side 4 × 10, what does the right side equal to balance the scale? =
16
Balance the scale: 2 + 2 1 + ? =
17
Balance the scale: 1 + __ 8 =
18
Balance the scale: 1 + 7 5 + ? =
19
Balance the scale: 4 + 4 7 + ? =
20
Balance the scale: 1 + 7 4 + ? =