By 3's
By 5's
By 10's
2 digit
3 digit
100
3 x 3
What is 9
100
5 x 2
What is 10
100
10 x 1
What is 10
100
12 x 5
What is 60
100
123 x 5
What is 615
200
3 x 4
What is 12
200
5 x 3
What is 15
200
10 x 4
What is 40
200
23 x 2
What is 46
200
111 x 10
What is 1,110
300
3 x 6
What is 18
300
5 x 7
What is 35
300
10 x 8
What is 80
300
56 x 4
What is 224
300
256 x 3
What is 768
400
3 x 9
What is 27
400
5 x 9
What is 45
400
10 x 10
What is 100
400
42 x 3
What is 126
400
145 x8
What is 1,160
500
3 x 12
What is 36
500
5 x 11
What is 55
500
10 x 12
What is 120
500
65 x 6
What is 390
500
336 x 6
What is 2,016
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