Curriculum placement
Grade 6. This describes the skill, not a learner estimate.
Equivalent ratios
Solve equivalent-ratio problems using tables and double number lines
Problem types
- Complete a ratio table
- Read a double number line
- Scale a dollar rate read from a table
Builds on
- Finding a unit rate
- The four operations with decimals · Useful idea
A price times a count is a unit rate scaled to a quantity. A rate table scales one hourly price to any number of hours the same way.
- Additive and multiplicative comparison · Earlier idea
Saying one amount is a number of times another is the multiplier in a ratio table that scales both amounts.
Leads to
- Percent of a number
- Representing a proportional relationship
- Slope of a line · Extend the idea
Equal steps in a ratio table give a constant ratio of change, which is the slope of the line through its points.
Related skills
- Unit rates with fractions · Shared foundations
Open the interactive map to explore lessons and skill connections.