Ratios and Rates Flashcards

Grade 6 · Math · Flashcards

Key vocabulary and concepts for ratios and rates in Grade 6 math.

Flashcards

Ratio: A comparison of two quantities using division — written as a:b, a/b, or 'a to b'
Rate: A ratio that compares two quantities measured in different units
Unit Rate: A rate with a denominator of 1 — tells you how much per one unit
Equivalent Ratios: Ratios that have the same value when simplified — like 4:6 and 2:3
Simplify a ratio: Divide both quantities by their greatest common factor
How to find a unit rate: Divide the first quantity by the second quantity
Example of a rate: $12 for 4 pounds — compares dollars to pounds (different units)
Example of a unit rate: $3 per pound — second quantity is 1
Ratio in fraction form: 3:5 can be written as 3/5 — but it doesn't always mean a fraction of a whole
Part-to-part ratio: Compares one part of a group to another part — e.g. boys to girls
Part-to-whole ratio: Compares one part of a group to the entire group — e.g. boys to total students
Scale factor: The ratio used to multiply all parts of a ratio to create equivalent ratios
3:4 equivalent ratios: 6:8, 9:12, 12:16 — all equivalent to 3:4
Unit price: Cost per one item or one unit — used to compare shopping deals