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What is 1 + 3?
The answer to a multiplication problem.
One of the numbers being multiplied in a multiplication problem.
The number being divided up.
What you are dividing by.
The answer to a divison problem
What's left over in a division problem.
The answer to an addition problem
One of the numbers being added in an addition problem.
The answer to a subtraction problem
The middle number in an ordered set of numbers.
The number that occurs the most often in a set of numbers.
The difference between the greatest and least number in a set of numbers.