Grade 4 Math Unit Assessment: Factors and Multiples (18 Marks)

Skills Assessed

• Find all the factor pairs of a whole number from 1 to 100 using arrays and multiplication facts.
• List the multiples of a number and decide if a number is a multiple of another.
• Find common factors and common multiples of two numbers.
• Decide if a number is prime or composite and explain why (1 is neither).

How to Administer

• Give at the end of the unit (or as a pre-test before teaching).
• Allow about 35 minutes. Students work alone.
• Mark with the answer key; use the score guide to decide who needs re-teaching or a challenge.

Differentiation

Support: Use tiles or grid paper for every factor question. Challenge: Find a number with exactly 3 factors (square numbers of primes: 4, 9, 25, 49). English language learners: Teach "factor" and "multiple" with gestures: factors are the "building blocks", multiples are the "times-table jumps".

Teacher Tips

Keep a hundred chart on every desk for this unit. Arrays make factors visible: if you can make a rectangle with r rows, r is a factor.

What's Included

• 18-mark unit assessment (PDF + editable DOCX)
• Part A: Factors (4 marks)
• Part B: Multiples (4 marks)
• Part C: Prime or Composite (6 marks)
• Part D: Explain (4 marks)
• Answer key with marking notes and a score guide (PDF)

Additional Files

• Grade 4 Math Unit Assessment: Factors and Multiples (18 Marks) (DOCX)
• Answer Key (PDF)

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