Grade 6 Mathematics · Strand 1: Numbers · Whole Numbers
Determining Square Roots Using Factor Trees
A short Grade 6 Mathematics lesson for the CBE curriculum, part of Numbers: Whole Numbers. 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. Which of these numbers is a prime number?
- A. 21
- B. 27
- C. 19
- D. 15
2. Use prime factorisation to find \sqrt{196}.
Type your answer in the lesson.
3. A square field in Nakuru has an area of 324 m^2. Use prime factorisation to find the length of one side of the field.
Type your answer (in m) in the lesson.
4. The prime factors of 400 are 2 × 2 × 2 × 2 × 5 × 5. What is \sqrt{400}?
- A. 10
- B. 20
- C. 40
- D. 200
5. In the factor tree method, what do we call grouping identical prime factors in sets of two to find a square root?
Type your answer in the lesson.
More in Whole Numbers
- Concept of Squares of Whole Numbers
- Calculating Squares of Numbers up to 50
- Calculating Squares of Whole Numbers up to 100
- Concept of Square Roots of Numbers
- Square Roots of Perfect Squares up to 1,000
- Square Roots of Perfect Squares up to 10,000
- Combined Operations with Powers
- Digital Games and Problem Solving with Whole Numbers
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