Mental Math > Addition > Flashcards
1+1
2
1+2
3
1+3
4
1+4
5
1+5
6
1+6
7
1+7
8
1+8
9
1+9
10
2+1
2+2
2+3
2+4
2+5
2+6
2+7
2+8
2+9
11
2+10
12
3+1
3+2
3+3
3+4
3+5