7th grade math

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Last updated 7:30 PM on 8/5/25
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10 Terms

1
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Variable

A symbol, usually a letter, representing an unknown value.

2
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Algebraic Expression

A combination of variables, numbers, and at least one operation.

3
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Evaluating Expressions

Substituting a given value for the variable and simplifying.

4
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Addition Property of Equality

If a = b, then a + c = b + c.

5
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Subtraction Property of Equality

If a = b, then a - c = b - c.

6
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Multiplication Property of Equality

If a = b, then ac = bc.

7
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Division Property of Equality

If a = b and c ≠ 0, then a/c = b/c.

8
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Rational Number

Any number that can be written as a fraction a/b where a and b are integers and b ≠ 0.

9
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Ratio

A comparison of two quantities by division.

10
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Percent

A ratio comparing a number to 100 (x% means x/100).