Factors, multiples and primes (Edexcel GCSE Maths): Quizzes

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Factors, multiples and primes
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What are factors of a number?

Whole numbers dividing exactly into it

Which list shows all the factors of 1212?

1,2,3,4,6,121, 2, 3, 4, 6, 12

Which pair are factor pairs of 1212?

3×4=123 \times 4 = 12

What is a common factor?

Factor of two or more numbers

Which number is a multiple of 77?

2828

Is 1212 a common multiple of 66 and 44?

Yes, it's in both times tables

Why is 11 not a prime number?

It only has one factor, not two

Which of these is a prime number?

1717

What do factor trees help you find?

Prime factors of any number

In 90=5×2×3×390 = 5 \times 2 \times 3 \times 3, how is 3×33 \times 3 written in index form?

323^2

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