Sums to 20
Sums to 30
Sums to 40
Sums to 50
100
10 + =20
What is 10?
100
15 + = 30
What is 15?
100
20 + =40
What is 20?
100
25 + =50
What is 25?
200
12 + = 20
What is 8?
200
13 + = 30
What is 17?
200
37 + = 40
What is 3?
200
38 + = 50
What is 12?
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