Sum-difference-product Flashcards
1
Q
2+4
A
6
2
Q
2+5
A
7
3
Q
2+6
A
8
4
Q
2+7
A
9
5
Q
2+3
A
5
6
Q
2+8
A
10
7
Q
2+9
A
11
8
Q
3+3
A
6
9
Q
3+4
A
7
10
Q
3+5
A
8
11
Q
3+6
A
9
12
Q
3+7
A
10
13
Q
3+8
A
11
14
Q
3+9
A
12
15
Q
4+4
A
8
16
Q
4+5
A
9
17
Q
4+6
A
10
18
Q
2+2
A
4
19
Q
4+7
A
11
20
Q
4+8
A
12
21
Q
4+9
A
13
22
Q
5+5
A
10
23
Q
5+6
A
11
24
Q
5+7
A
12
25
Q
5+8
A
13
26
Q
5+9
A
14
27
Q
6+6
A
12
28
Q
6+7
A
13
29
Q
6+8
A
14
30
Q
6+9
A
15
31
Q
7+7
A
14
32
Q
7+8
A
15
33
Q
7+9
A
16
34
Q
8+8
A
16
35
Q
8+9
A
17
36
Q
9+9
A
18
37
Q
2x2
A
4
38
Q
2x3
A
6
39
Q
2x4
A
8
40
Q
2x5
A
10