Grade 7 Math Tiered Vocabulary

proportional relationship

Two values change together at the same rate.

constant of proportionality

The number that connects x and y in a proportion.

percent increase

How much bigger in percent.

percent decrease

How much smaller in percent.

discount

Money taken off the price.

tax

Extra money added to the price.

simple interest

Money earned based on the original amount.

rational number

A number that can be written as a fraction.

integer

A whole number, positive or negative.

scale factor

A number used to make a shape bigger or smaller.

equation

Math with an equals sign.

inequality

A comparison using <, >, ≤, or ≥.

probability

How likely something will happen.

theoretical probability

Probability based on math, not trials.

experimental probability

Probability based on results from trials.

analyze

Look at parts carefully.

compare

Find what is the same and different.

justify

Tell why your answer is correct.

interpret

Tell what it means.

solve

Find the correct answer.

estimate

Find a close answer.

about

Not exact. Close to.

percent

A part out of 100.

per

For each.

increase

To get bigger.

decrease

To get smaller.