20 - 10
5
12
10
4 - 1
3
5
2
1 + 6
7
5
8
6 + 6
12
18
20
5 + 6 =
9
11
12
7 + 8
15
14
18
What number is shown?
17
2 + 3
7
5
4
9 + 3
12
14
10 - 5
5
10
15
2 + 2 + 2 + 2
8
3
6
9-2
10
7
8
7 + 2
9
6
8
6 + 1
7
8
5
14 - 9
7
6
5
3 + 4
6
7
8
17 - 5
22
12
8
8 - 2
5
10
6
4+7
10
9
11
3+5
6
7
8
5 - 3
2
3
8
9 + 9
12
0
18
9 - 3
12
6
5
13 - 9
4
7
5