🧠 Grade 4 Math Quiz · Number Theory

Factors Practice Questions

62 Grade 4 questions on Factors. Choose an answer to get instant feedback and a short explanation — the first 10 are free.

What are all the factors of 12?

Explanation: The factors of 12 are 1, 2, 3, 4, 6, 12 because they divide 12 evenly.

Which number is a factor of 18?

Explanation: 18 ÷ 6 = 3 with no remainder, so 6 is a factor.

How many factors does 16 have?

Explanation: Factors of 16: 1, 2, 4, 8, 16 (5 factors).

What is the greatest factor of 24?

Explanation: The greatest factor of any number is the number itself.

Which of these is NOT a factor of 20?

Explanation: 20 ÷ 6 is not a whole number.

List the factors of 15.

Explanation: 1, 3, 5, 15 all divide 15 evenly.

A rectangle has area 36. Which pair of numbers can be its length and width?

Explanation: 4 × 9 = 36, so they are factors of 36.

What is the smallest factor of every number?

Explanation: 1 is a factor of every number.

How many factors does 25 have?

Explanation: Factors of 25: 1, 5, 25 (3 factors).

Which number is a factor of both 12 and 18?

Explanation: 6 divides both 12 and 18 evenly (common factor).

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