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4th GradeNumber Sense4.OA.B.4

Factors, Multiples, Prime, and Composite Numbers Worksheets for 4th Grade

These factors, multiples, prime, and composite numbers worksheets give parents and teachers focused, repeatable practice for 4th Grade learners. Find factor pairs, identify multiples, and classify whole numbers as prime or composite. Choose a fixed-seed sample or make a fresh printable without creating an account.

Learning objective: Find factor pairs, identify multiples, and classify whole numbers as prime or composite.
Reproducible fixed seeds

Three free worksheet samples

Open a sample to preview all questions, make a fresh version, or download the worksheet and answer key.

Factors, Multiples, Prime, and Composite Numbers
Sample 1 · Seed leaf-59-4-factors-multiples-prime-composite-sample-a7
1. Complete the factor pair for 90: 10 × ___ = 90
2. What is the 27th multiple of 3?
3. Is 12 prime, composite, or neither?
4. What is the 10th multiple of 7?
Open this sample
Factors, Multiples, Prime, and Composite Numbers
Sample 2 · Seed leaf-59-4-factors-multiples-prime-composite-sample-m3
1. What is the 10th multiple of 9?
2. Is 75 prime, composite, or neither?
3. What is the 6th multiple of 10?
4. Complete the factor pair for 6: 2 × ___ = 6
Open this sample
Factors, Multiples, Prime, and Composite Numbers
Sample 3 · Seed leaf-59-4-factors-multiples-prime-composite-sample-z9
1. What is the 7th multiple of 7?
2. What is the 4th multiple of 9?
3. Complete the factor pair for 63: 9 × ___ = 63
4. What is the 9th multiple of 8?
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One fixed-seed example

How to approach this skill

Problem: Complete the factor pair for 90: 10 × ___ = 90

Answer: 9

Strategy: Read the value and relationship of each number before choosing a symbol or missing value. This example supports the page objective: Find factor pairs, identify multiples, and classify whole numbers as prime or composite.

How to use this worksheet

  • Use counters or a number line before moving to symbols alone. For this factors, multiples, prime, and composite numbers set, begin without a timer.
  • Ask for a short explanation of how the learner knows which number is greater. Regenerate only when the learner is ready for another arrangement of the same objective.

Begin with the easy setting when the strategy is new, use standard for independent practice, and reserve challenge for a learner who can explain the method accurately.

Common mistakes to watch

  • Comparing the shape of digits instead of their numerical value. Watch for this specifically during factors, multiples, prime, and composite numbers practice.
  • Treating a number sequence as memorized words without noticing its structure. Use the worked correction as the next teaching example.

Use the answer key to find a pattern, then ask the learner to explain one corrected example rather than repeating an entire set immediately.

Standards reference

Skill alignment

Alignment labels identify the primary skill practiced. A worksheet is supplemental practice and does not assess every part of a standard.

Planning help

Frequently asked questions

What does this 4th Grade Factors, Multiples, Prime, and Composite Numbers worksheet practice?

Find factor pairs, identify multiples, and classify whole numbers as prime or composite.

How should adults use the Factors, Multiples, Prime, and Composite Numbers printable?

Start with one untimed set, review the learner's strategy, and use the answer key to discuss errors. Generate a new fixed-seed set only after the current skill is understood.

Does the Factors, Multiples, Prime, and Composite Numbers download include answers?

Yes. The free PDF can include an appended answer key, or the answer key can be downloaded separately for adult use.

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