7th Grade Vocabulary Words (Week 2)

Front

Equivalent Ratios

Back

two ratios that express the same comparison

Multiplying both numbers in the ratio a : b by a nonzero number n results in the equivalent ratio na : nb.

Front

Rate

Back

a ratio that tells the number of units of one quantity for 1 unit of another quantity

Rates are often expressed using the word per, such as 5 miles per hour or 2 cups per serving.

Front

Ratio

Back

a way to compare two quantities when there are a units of one quantity for every b units of the other quantity

You can write the ratio in symbols as a : b and in words as a to b.

Front

Unit Rate

Back

the numerical part of a rate

For example, the rate 3 miles per hour has a unit rate of 3.

For the ratio a : b, the unit rate is the quotient a/b.

Front

Per

Back

for each or for every

The word per can be used to express a rate, such as $2 per pound.

Front

Compare

Back

to describe the relationship between the value or size of two numbers or quantities

Front

Complex Fraction

Back

a fraction in which the numerator is a fraction, the denominator is a fraction, or both the numerator and the denominator are fractions

Front

Constant of Proportionality

Back

the unit rate in a proportional relationship

Front

Origin

Back

the point (0,0) in the coordinate plane where the x-axis and y-axis intersect

Front

Convert

Back

to write an equivalent measurement using a different unit