Unit 3 Review

Front

Simplify the ratio of 20 to 25.

Back

4 to 5

Front

Two objects that are the same shape but not the same size are _______.

Back

Similar

Front

A unit rate is a ratio with:

Back

A denominator of 1

Front

A store has a sale for 25% off. You want a sweater that usually costs $30. How much money will you save?

Back

$7.50

Front

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

Back

15.79%.

Front

What is the definition of a ratio?

Back

A comparison of two quantities by division.

Front

What does it mean for two figures to be congruent?

Back

They have the same shape and size.

Front

What is the formula for calculating percent error?

Back

Percent Error = |(Measured Value - Actual Value)| / Actual Value x 100%.

Front

What is a unit rate?

Back

A rate in which the second quantity is 1.

Front

If a sweater costs $40 and is on sale for 20% off, how much do you pay?

Back

$32.