WorksheetsGCF and LCM
Total questions: 20
Worksheet time: 40mins
The H.C.F. of two numbers is 23 and the other two factors of their L.C.M. are 13 and 14. The larger of the two numbers is :
276
299
322
345
Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?
4
10
15
16
Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. Then sum of the digits in N is :
4
5
6
8
The greatest number of four digits which is divisible by 15, 25, 40 and 75 is :
9000
9400
9600
9800
The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is :
101
107
111
185
Given : Three numbers 17, 42 and 93
Find the largest number to divide all the three numbers leaving the remainders 4, 3, and 15 respectively at the end?
13
17
78
89
If the LCM of two numbers is 750 and their product is 18750, find the HCF of the numbers.
25
30
50
125
The HCF of two numbers is 8. Which of the following can never be their LCM?
24
48
56
60
What is the greatest common factor of 49, 91, and 119?
Possible Answers :
9
7
1
3
What is the greatest common factor of 55, 165, and 220?
11
55
5
20
What is the greatest common factor of 30, 90, and 120?
25
3
30
15
What is the GCF of 36, 64, and 144?
6
36
2
4
What is the greatest common factor of 36, 108, and 180?
18
5
3
36
What is the greatest common factor of 56 and 68?
8
4
14
7
What is the greatest common factor of 72 and 84?
18
6
12
10
What is the greatest common factor (GCF) of 48, 156, and 420?
4
12
6
2
What is the greatest common factor of 64 and 48?
16
12
24
8
Find the LCM of 1240 and 5300
328,600
330,000
328,900
320,600
What is the LCM?
The LCM is the least common factor that both numbers share the least.
The LCM is a multiple that both numbers share the most.
The LCM is a multiple that both numbers share the least.
The LCM is a factor that both numbers share the least.
Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.
4
7
9
13
