GCSE Secondary Maths Age 13-17 - Number: Prime Factors - Explained

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Mathematics
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10th - 12th Grade
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a prime number?
A number with exactly two factors
A number with only one factor
A number that is even
A number with more than two factors
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a prime number?
21
2
3
5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in using the factor tree method for 56?
Divide 56 by 2
Multiply 7 by 8
List all factors of 56
Check if 56 is a prime number
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the prime factors of 8 in the factor tree?
2 and 4
2 and 2
2, 2, and 2
4 and 4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the prime factorization of 56 be expressed in index form?
2^3 * 7
2 * 2 * 2 * 7
2^2 * 7
7^2 * 2
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