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- 1. Multiple Choice
Write 36 as the product of it's prime factors...
2 x 2 x 3 x 3
2 x 2 x 2 x 3
22 x 32
22 x 3
- 2. Multiple Choice
Write 135 as the product of it's prime factors...
Write your answer in index form...
32 x 52
33 x 5
3 x 3 x 3 x 5
3 x 3 x 5 x 5
- 3. Multiple Choice
Write 80 as the product of it's prime factors...
Write your answer in index form...
24 x 5
2 x 2 x 2 x 5 x 5
2 x 2 x 2 x 2 x 5
23 x 52
- 4. Multiple Choice
A common factor of two integers is always a ____________ of their HCF.
multiple
factor
(no answer)
- 5. Multiple Choice
A common multiple of two integers is always a ____________ of their LCM.
multiple
factor
(no answer)
- 6. Multiple Choice
What is the LCM of 2, 4, 6?
6
12
4
2
- 7. Multiple Choice
What is the greatest common factor of 24 and 36?
2
3
12
24
- 8. Multiple ChoiceWhat is the GCF of 4 and 12?3164
- 9. Multiple Choice
Given two different prime numbers, their HCF is:
The smaller prime
The larger prime
1
Unknown, as we don't know what they are
- 10. Multiple Choice
Given two different prime numbers, their LCM is:
The smaller prime
The larger prime
Unknown, as we don't know what they are
Their product
Their sum
- 11. Multiple Choice
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
- 12. Multiple Choice
There are two positive integers, a and b. Given that their LCM is 120. Which of the followings cannot be their HCF?
60
36
15
40
- 13. Multiple Choice
There are two positive integers, a and b. Which statement is always true?
a x b = LCM(a,b) x HCF(a,b)
a x b > LCM(a,b) x HCF(a,b)
a x b < LCM(a,b) x HCF(a,b)
(a x b)^2 = LCM(a,b) x HCF(a,b)
- Answer choicesTagsAnswer choicesTags