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