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