Hard · Set 1
20 problems
Name:
Class:
Date:
1
12 - 2
=
2
7 - 1
=
3
15 - 7
=
4
11 - 1
=
5
12 - 10
=
6
13 - 1
=
7
17 - 5
=
8
15 - 9
=
9
16 - 5
=
10
6 - 1
=
11
17 - 6
=
12
10 - 7
=
13
16 - 2
=
14
9 - 6
=
15
11 - 5
=
16
11 - 10
=
17
6 - 2
=
18
18 - 8
=
19
13 - 7
=
20
8 - 7
=