Difficult additions and subtractions Flashcards
1
Q
8+4
A
12
2
Q
7+6
A
13
3
Q
6+9
A
15
4
Q
8+3
A
11
5
Q
4+9
A
13
6
Q
9+5
A
14
7
Q
5+8
A
13
8
Q
9+2
A
11
9
Q
7+8
A
15
10
Q
5+7
A
12
11
Q
8+4
A
12
12
Q
7+6
A
13
13
Q
6+9
A
15
14
Q
8+3
A
11
15
Q
4+9
A
13
16
Q
9+5
A
14
17
Q
5+8
A
13
18
Q
9+2
A
11
19
Q
18-9
A
9
20
Q
15-6
A
9
21
Q
12-8
A
4
22
Q
13-7
A
6
23
Q
15-6
A
9
24
Q
11-3
A
8
25
13-9
4
26
14-5
9
27
13-8
5
28
11-9
2
29
15-8
7
30
12-7
5
31
15
6+9
32
11
8+3
33
13
4+9
34
14
9+5
35
13
5+8
36
11
9+2
37
15
7+8
38
12
5+7
