Grade 7 Mathematics · Strand 1: Numbers · Factors
Composite Numbers as a Product of Prime Factors
A short Grade 7 Mathematics lesson for the CBE curriculum, part of Numbers: Factors. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. What is the prime factorisation of 96 written in index notation?
- A. 2^5 \times 3
- B. 2^6 \times 3
- C. 2^4 \times 6
- D. 2^3 \times 3^2
2. How many factors does the number 28 have in total?
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3. In the expression 2^3 \times 3^2, what name is given to the small raised numbers 3 and 2 that show how many times each prime is repeated?
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4. Which of these numbers is a composite number?
- A. 31
- B. 37
- C. 41
- D. 51
5. The number 540 can be written as 2^2 \times 3^a \times 5. Find the value of a.
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