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Multiples & LCM Basics Quiz

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Common multiples & LCM

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Multiples & LCM Basics Quiz
 

Multiples & LCM Basics QuizOnline version

Common multiples & LCM

by Blessing Kukoyi
1

What is the least common multiple (LCM) of 4 and 6?

2

Which numbers are common multiples of 3 and 5?

3

Find the LCM of 8 and 12.

4

Which is a common multiple of 2 and 7?

5

The LCM of 9 and 6 is:

6

Which numbers are multiples of 5?

7

What is the LCM of 7 and 3?

8

If a number is a multiple of 4 and 9, it is a multiple of:

9

Which is the least common multiple of 6 and 8?

10

Which of these is NOT a common multiple of 2 and 3?

11

The multiples of 11 are:

12

LCM of 5 and 2 is:

13

Which number is a common multiple of 6 and 9?

14

Find a common multiple of 4 and 5.

15

The LCM of 12 and 15 is:

16

Which is the LCM of 3 and 8?

17

Which number is a common multiple of 10 and 25?

18

If a number is a multiple of 14 and 21, it must be a multiple of:

19

What is the LCM of 1 and any number?

20

Which of these is a common multiple of 2 and 5?

21

Identify a common multiple of 3 and 4 that is under 50.

Feedback

LCM is the smallest number that is a multiple of both numbers.

Common multiples are multiples of both; 15 is the smallest.

8×12 = 96; LCM is the smallest common multiple, which is 24.

14 is 2×7, multiples of both.

Multiples of 9: 9,18,27...; of 6: 6,12,18...; first common is 18.

Multiples of 5 end in 0 or 5.

7×3=21; both numbers divide 21.

LCM(4,9)=36.

LCM(6,8)=24.

4 is not a multiple of 3.

Multiples of a number are that number times integers.

5 and 2 share 1 as gcd; LCM is product 10.

18 is multiple of both 6 and 9.

20 is divisible by both 4 and 5.

LCM(12,15)=60.

LCM is 3×8 since gcd is 1.

LCM(10,25)=50.

LCM is the smallest common multiple; 42.

LCM(1, n) = n.

10 is multiple of both 2 and 5.

12 is multiple of both; other options are not.

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