RatiosPart to part, or part to whole — and why mixing them up…6th GradeA ratio compares two quantities. It cancompare one part with another part, or onepart with the whole.3 : 5 · 3 to 5 · 3/53 red, 5 bluepart : part = 3 : 5Comparing the two colours with each other.3 red out of 8part : whole = 3 : 8Comparing red with everything.6 : 10simplifies to 3 : 5Divide both sides by the same number.3 : 5 scaled up6 : 10, 9 : 15Multiply both sides by the same number.THE COMMON MISTAKE✗ 3 red and 5 blue means 3/5 are red✓ 3/8 are red3 : 5 is part to part. The whole is 8, so the fraction is 3/8.A ratio is not a fraction unless it compares a part with the whole.Check which one the question means.Ratioswww.littleactivity.com

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Math · 6th Grade

Ratios

Part to part, or part to whole — and why mixing them up changes the answer.

How to use it

Always ask which two things are being compared before writing anything down.

Free · print-ready PDF · US Letter and A4

Grade
6th Grade
Ages
11–12
Subject
Math
Pages
1

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