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Grade:
6
, Subject:
Math
, Topic:
Relation between LCM and GCF
Question 1:
The product of two numbers is 'x' and their GCF is 'y'. Find the LCM for those numbers.
x/y
y/x
xy
x + y
Question 2:
GCF of two numbers is 14 and their product is 8400. What is the LCM of those two numbers?
140
840
400
600
Question 3:
The LCM of two numbers is 600 and their GCF is 15. One of the numbers is 75. Find the other number.
140
120
200
60
Question 4:
LCM of two numbers is 400 and their product is 6400. What is their GCF?
18
56
16
12
Question 5:
The GCF of two numbers is 18 and their LCM is 108. One of the numbers is 54. What is the other number?
36
40
16
24
Question 6:
The GCF of two numbers should be a factor of their ______.
Sum
HCF
HCF × 2
LCM
Question 7:
GCF of two numbers is 18 and their product is 1620. What is their lowest common multiple?
90
160
120
540
Question 8:
The Lowest Common Multiple of two numbers is 420 and their Greatest Common Factor is 20. One of the numbers is 40. Find the other number.
200
210
120
80
Question 9:
Which of the following GCF and LCM is a possible combination of two numbers?
GCF = 18, LCM = 565
GCF = 20, LCM = 535
GCF = 15, LCM = 525
GCF = 16, LCM =295
Question 10:
GCF of two numbers is 7 and their product is 588. What is the LCM of those two numbers?
66
28
84
48
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