Curriculum placement
Grade 3. This describes the skill, not a learner estimate.
Missing factors and quotients
Find missing factors and quotients
Problem types
- Find the missing factor
- Find the group size
- Find the starting total
Builds on
- Quotients from related facts
- Finding a missing number · Earlier idea
An unknown addend is the whole minus the known part. An unknown factor is the product divided by the known factor.
Leads to
- Area and perimeter problems · See it applied
The unknown side of a rectangle with a known area is a missing factor.
- Fluent whole-number division · Extend the idea
Long division finds the unknown factor that multiplies the divisor to give the dividend.
- Solving one-step equations · Extend the idea
An unknown factor in a fact is a one-step equation. A letter can stand for the unknown number.
- Finding a unit rate · See it applied
Finding how many items are in each group is an unknown factor, and the unit rate is the same quantity: the total divided by the number of groups.
- Rearranging a formula · Extend the idea
An unknown factor is found by dividing the product by the other factor. Solving a formula for one variable divides by the other factors in the same way.
Related skills
- Factors, multiples, primes, and composites · Shared foundations
- Equal multiplication and division equations · Shared foundations
- Dividing by a one-digit number · Shared foundations
Open the interactive map to explore lessons and skill connections.