Doubles plus two Flashcards
1
Q
1+3
A
4
2
Q
2+4
A
6
3
Q
3+5
A
8
4
Q
4+6
A
10
5
Q
5+7
A
12
6
Q
6+8
A
14
7
Q
7+9
A
16
8
Q
8+10
A
18
1+3
4
2+4
6
3+5
8
4+6
10
5+7
12
6+8
14
7+9
16
8+10
18