Curriculum placement
Grade 4. This describes the skill, not a learner estimate.
Additive and multiplicative comparison
Distinguish additive and multiplicative comparisons
Problem types
- Select the equations that fit a comparison story
- Read and write times as many
- Find a compared amount
- Find how many times as many
- Compare counts with times as many
Builds on
- Multiplication and division word problems
- Comparing two groups by matching · Earlier idea
Comparing groups as more or fewer extends to comparing as times as many.
Leads to
- Equivalent ratios · Extend the idea
Saying one amount is a number of times another is the multiplier in a ratio table that scales both amounts.
- Understanding ratios · Extend the idea
Saying one amount is a number of times another compares two quantities by multiplication, which is a ratio.
- Representing a proportional relationship · Extend the idea
Saying one amount is n times another is a constant of proportionality: all pairs of amounts keep the same ratio.
- Scale drawings of lengths and areas · See it applied
A scale factor says one length is a number of times another, which is a multiplicative comparison.
Related skills
- Mass and liquid volume · Shared foundations
- Multi-operation word problems · Shared foundations
Open the interactive map to explore lessons and skill connections.