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Fill in the missing number in the addition problem.
+ 5 = 7
Check
Explain
Fill in the missing number in the addition problem.
5 +
= 10
Check
Fill in the missing number in the addition problem.
2 +
= 9
Check
Fill in the missing number in the addition problem.
+ 4 = 11
Check
Fill in the missing number in the addition problem.
3 +
= 6
Check
Fill in the missing number in the addition problem.
4 +
= 7
Check
Fill in the missing number in the addition problem.
+ 3 = 12
Check
Fill in the missing number in the addition problem.
+ 3 = 6
Check
Fill in the missing number in the addition problem.
+ 3 = 7
Check
Fill in the missing number in the addition problem.
+ 2 = 6
Check
Fill in the missing number in the addition problem.
5 +
= 7
Check
Fill in the missing number in the addition problem.
+ 4 = 7
Check
Fill in the missing number in the addition problem.
2 +
= 11
Check
Fill in the missing number in the addition problem.
+ 2 = 12
Check
Fill in the missing number in the addition problem.
2 +
= 8
Check
Fill in the missing number in the addition problem.
+ 4 = 12
Check
Fill in the missing number in the addition problem.
1 +
= 7
Check
Fill in the missing number in the addition problem.
+ 4 = 6
Check
Fill in the missing number in the addition problem.
1 +
= 8
Check
Fill in the missing number in the addition problem.
4 +
= 6
Check
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Created by graduates of Stanford, Harvard and Berkeley.
Used by over 1 million students in the United States.
Real learning, real fun.