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Doubles
Doubles + 1
Adding 8
Make a 10
Addition with 3's
100
2+2
4
100
1+2
3
100
1+8
9
100
1+9
10
100
2 + 3
5
200
3+3
6
200
2+3
5
200
3+8
11
200
3+9
12
200
4 + 3
7
300
6+6
12
300
4+5
9
300
5+8
13
300
4+9
13
300
6 + 3
9
400
8+8
16
400
7+8
15
400
7+8
15
400
6+9
15
400
8 + 3
11
500
9+9
18
500
8+9
17
500
9+8
17
500
8+9
17
500
9 + 3
12