Integers

Lowest common multiples

Name: ______________________________Date: ______________Score: ______ / 20

1.
Find the lowest common multiple of 4 and 3.
2.
5 and 4 share no common factor apart from 1. What is their LCM?
3.
Two buses leave a stop every 5 minutes and every 11 minutes. After how many minutes do they next leave together?
minutes
4.
180 is a multiple of 10.
True False
5.
What is the 4th multiple of 2?
6.
Two buses leave a stop every 12 minutes and every 10 minutes. After how many minutes do they next leave together?
minutes
7.
72 is a multiple of 9.
True False
8.
Which is a common multiple of 5 and 8?
1. A13
2. B4
3. C40
9.
Put the first five multiples of 5 in order, smallest first.
Write the order (smallest to largest) in the boxes:
- ?25
- ?20
- ?15
- ?10
- ?5
10.
96 is a multiple of 8.
True False
11.
9 and 7 share no common factor apart from 1. What is their LCM?
12.
The LCM of 6 and 9 is 54.
True False
13.
Which number is NOT a multiple of both 2 and 12?
1. A13
2. B12
3. C24
14.
What is the 4th multiple of 7?
15.
75 is a common multiple of 5 and 15.
True False
16.
Put the first five multiples of 8 in order, smallest first.
Write the order (smallest to largest) in the boxes:
- ?40
- ?32
- ?24
- ?16
- ?8
17.
200 is a multiple of 10.
True False
18.
5 and 3 share no common factor apart from 1. What is their LCM?
19.
The LCM of 10 and 4 is 40.
True False
20.
Which number is NOT a multiple of both 4 and 3?
1. A12
2. B24
3. C13

Answer key

Integers — Lowest common multiples