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