Grade 7 Math Vocabulary

Seventh grade builds on the ratio ideas of sixth grade and pushes them further: proportions become equations, percents describe price changes, and chance becomes a number between 0 and 1. This Grade 7 math vocabulary page collects the words that come with those ideas.

You will find the language of markups and discounts, the rules for signed numbers, the names of angle pairs, the parts of a circle and the words of probability. Every term links to a page with a figure and a fully worked problem.

41 terms on this page, each with a definition, a figure and a worked example.

Grade 7 Math Vocabulary: the full list

Numbers and Operations

• Additive Inverse 7.NS.A.1a
• Complex Fraction 7.RP.A.1
• Integer Rules 7.NS.A.1
• Repeating Decimal 7.NS.A.2d
• Terminating Decimal 7.NS.A.2d

Ratios, Rates and Percents

• Commission 7.RP.A.3
• Constant of Proportionality 7.RP.A.2b
• Cross Multiplication 7.RP.A.2c
• Discount 7.RP.A.3
• Markup 7.RP.A.3
• Percent Change 7.RP.A.3
• Percent Decrease 7.RP.A.3
• Percent Error 7.RP.A.3
• Percent Increase 7.RP.A.3
• Proportion 7.RP.A.2
• Proportional Relationship 7.RP.A.2a
• Sales Tax 7.RP.A.3
• Simple Interest 7.RP.A.3

Expressions and Equations

• Two-Step Equation 7.EE.B.4a
• Two-Step Inequality 7.EE.B.4b

Geometry and Measurement

• Adjacent Angles 7.G.B.5
• Area of a Circle 7.G.B.4
• Circumference 7.G.B.4
• Complementary Angles 7.G.B.5
• Cross Section 7.G.A.3
• Pi (π) 7.G.B.4
• Radius and Diameter 7.G.B.4
• Scale Drawing 7.G.A.1
• Scale Factor 7.G.A.1
• Supplementary Angles 7.G.B.5
• Triangle Inequality Theorem 7.G.A.2
• Vertical Angles 7.G.B.5

Statistics and Data

• Population (Statistics) 7.SP.A.1
• Random Sample 7.SP.A.1

Probability and Counting

• Compound Event 7.SP.C.8a
• Experimental Probability 7.SP.C.6
• Probability 7.SP.C.5
• Sample Space 7.SP.C.8b
• Simulation 7.SP.C.8c
• Theoretical Probability 7.SP.C.7a
• Tree Diagram 7.SP.C.8b