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