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Unit 1: Factors and Multiples

Students apply understanding of multiplication and area to work with factors and multiples.

Worksheets

Every sheet has an answer key. Free to print, no login.

Unit
📝 Worksheet ✅ Answer guide
Concept
📝 Worksheet ✅ Answer key
Practice
Set 1
📝 Worksheet ✅ Answer key
Set 2
📝 Worksheet ✅ Answer key
Advanced
Set 1
📝 Worksheet ✅ Answer key
Set 2
📝 Worksheet ✅ Answer key

What this unit covers

A Understand Factors and Multiples · 4 lessons
Goals
  • Determine if a number is prime or composite.
  • Explain what it means to be a factor or a multiple of a whole number.
  • Relate the side lengths and area of a rectangle to factors and multiples.
Lessons
  1. Multiples of a Number
  2. Factor Pairs
  3. Prime and Composite Numbers
  4. Multiplication Practice (Optional)
B Find Factor Pairs and Multiples · 4 lessons
Goals
  • Apply multiplication fluency within 100 and the relationship between multiplication and division to find factor pairs and multiples.
Lessons
  1. More Multiples
  2. The Locker Problem
  3. Find Factors and Multiples
  4. Mondrian's Art (Optional)

Helpful to know first

The curriculum says this unit builds on these.

Grade 3 Math · Unit 2 Area and Multiplication
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Adapted from the Illustrative Mathematics curriculum (v.360), licensed CC BY-NC 4.0. © Illustrative Mathematics.