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The answer to any math problem depends on upon the question being asked. In most math problems, one needs to determine a missing variable. For instance, if a problem reads as 2+3 = , one needs to figure out what the number after the equals sign should be.

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In other cases, one may see a number after the equals sign but a letter or two letters in the middle of the problem. That looks like the following: 2+a=5. In questions like this one, the answer is the number that accurately replaces the letter.

Many math problems are story problems. In order to solve a story problem, one must create an equation based on the information presented in the story, and they must solve for the variable in that equation.

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The numbers to add in an addition problem are called addends, summands or terms, while the answer to the problem is the sum. In the number sentence a+b=c, a and b are addends, while c is the sum.

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A net change in math is the total of all of the changes completed throughout the solving of a problem. The net change is reflected in a numerical amount and can be positive, negative or at zero.

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One funny math problem is: "I am an odd number. Take away one letter and I become even. What number am I?" The answer is seven. The humor in this problem becomes apparent when the solver recognizes that the mathematics of odd and even numbers has been mixed with wordplay.