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