6th Grade · Ratios & Proportional Relationships

Part-to-Part Ratio

6.RP.A.1

Definition

A ratio that compares one part of a group to a different part of that same group.

Examples

  • 3 teal to 2 gold = 3:2 (part compared to part).
  • Neither number is the total — both are parts.

Key rule

Both numbers in the ratio are parts, not the whole group.

Memory hook

Comparing one part to another part.