Basic Math Concepts

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Numerator

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The number on the top of a fraction. It tells how many parts of the whole you have.

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Denominator

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The number on the bottom of a fraction. It shows the total number of equal parts in the whole.

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Like Denominator

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When two or more fractions have the same number on the bottom. This means the parts are the same size.

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Sum

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The answer you get when you add two or more numbers together.

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Difference

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The answer you get when you subtract one number from another.

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Visual Model

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A picture or drawing that helps you see and understand a math problem.

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Whole

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In fractions, a whole is something that hasn’t been divided or broken into parts. When a fraction equals the whole, it means all parts add up to make one complete thing. For example, if you have 4 out of 4 equal parts, you have the whole.

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RDW Process

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A process used when solving word problems. Read the problem, Draw a picture (tape diagram), Write numbers to solve and a statement to answer.