WorksheetsHCF and LCM
Total questions: 20
Worksheet time: 20mins
List the first four multiples of 8.
1, 2, 4, 8
8, 16, 24, 32
16, 24, 32, 40
2, 4, 6, 8, 10
2) Mrs. Evans has 120 crayons and 30 pieces of paper to give to her students. What is the largest number of students she can have in her class so that each student gets equal number of crayons and equal number of paper.
120 students
60 students
30 students
Four bells ring after 9,12 and 15 minutes respectively.If they ring together at 3pm together, when will they ring together again?
4pm
5pm
6pm
7pm
Two bikers are riding a circular path. The first rider completes a round in 12 minutes. The second rider completes a round in 18 minutes. If they both started at the same place and time and go in the same direction, after how many minutes will they meet again at the starting point?
4 minutes
8 minutes
12 minutes
24 minutes
4
40
5
10
2
10
3
5
The HCF of 168 and N is 42,
Given that 200< N >300, Find two possible values of N
210 , 294
210,252
220,290
Non of the above
Rosa is making a game board that is 16 inches by 24 inches. She wants to use square tiles. What is the larges tile she can ued?
8
16
24
48
Ben exercises every 12 days and Isabel every 8 days. Ben and Isabel both exercised today. How many days will it be until they exercise together again?
4
6
12
24
Find the LCM of 120 and 150.
300
360
450
600
A number is expressed as
23 x 33 x 5.
What is the number?
11
72
270
1080
17 is a PRIME NUMBER because it has just ___ factors: ___ and ___.
2, 5, 7
two, itself, 1
2, 15, 2
2, 8.5, 2
There are two positive integers, a and b. Given that their HCF is 15. Which of the followings cannot be their LCM?
105
225
125
195
What is the greatest common factor of 24 and 36?
2
3
12
24
Find the HCF of 32 and 80.
8
16
24
32
Which number has a factor of 16?
258
112
596
452
What is 720 as a product of its prime factors?
24 x 32 x 5
16 x 33 x 5
23 x 42 x 3
26 x 7
What are all the FACTORS of 24?
1, 2, 12, 24
1, 2, 8, 24
1, 2, 3, 4, 5, 6, 8, 12, 24
1, 2, 3, 4, 6, 8, 12, 24
Wha does HCF stand for?
Highest common factor
Highest core frequency
Highest common frequency
Highest core factor
What does LCM stand for
lowest common number
lowest core number
lowest core multiple
lowest common multiple
