Factors and Multiples
Math ⇒ Number and Operations
Factors and Multiples starts at 6 and continues till grade 12.
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See sample questions for grade 7
Explain how to find the LCM of two numbers using their prime factors.
Explain why every number is a multiple of itself.
Find the GCF of 42 and 56.
Find the highest common factor (HCF) of 12, 18, and 24.
List all the factors of 28.
List all the factors of 45.
List all the factors of 60.
A school has 36 boys and 48 girls. The students are to be divided into groups with an equal number of boys and an equal number of girls in each group, and no student is left out. What is the largest possible number of groups?
Which of the following is a common multiple of 3 and 5?
(1) 8
(2) 10
(3) 12
(4) 15
Which of the following is a factor of 81?
(1) 8
(2) 9
(3) 18
(4) 27
Which of the following is a factor of both 45 and 60?
(1) 3
(2) 5
(3) 9
(4) 15
Which of the following is NOT a factor of 54?
(1) 2
(2) 3
(3) 6
(4) 7
Fill in the blank: The GCF of 16 and 24 is _______.
Fill in the blank: The GCF of 21 and 35 is _______.
Fill in the blank: The greatest common factor (GCF) of 18 and 24 is _______.
Fill in the blank: The LCM of 8 and 14 is _______.
If a number is a multiple of 12, is it also a multiple of 4?
If a number is a multiple of 9, is it also a multiple of 3?
Is 1 a factor of every whole number?
Is 13 a factor of 169?
