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- 1. Multiple Choice
The index notation of 9 & 24 is ....
Hence, the least common multiple (LCM) of 9 & 24 is ...
- 2. Multiple Choice
The LCM of 12 and 24 is ...
- 3. Multiple Choice
The LCM of 20 and 32 is ...
160
128
640
32
- 4. Fill in the Blank
The LCM of 63 and 49 is ...
- 5. Fill in the Blank
Using index notation, write down the LCM of 42 and 70. (Hint: use the letter "x" for multiplication)
- 6. Multiple Choice
The index notation of 9 & 24 is ....
Hence, the highest common factor (HCF) of 9 & 24 is ...
- 7. Multiple Choice
The HCF of 12 and 24 is ...
- 8. Multiple Choice
The HCF of 20 and 32 is ...
4
20
2
8
- 9. Fill in the Blank
The HCF of 63 and 49 is ...
- 10. Fill in the Blank
Using index notation, write down the HCF of 42 and 70. (Hint: use the letter "x" for multiplication)
- 11. Fill in the Blank
The LCM of 10, 15 and 45 is ...
- 12. Fill in the Blank
The HCF of 21, 28 and 35 is ...
- 13. Fill in the Blank
Using index notation, write down the HCF of 48, 72 and 63. (Hint: use the letter "x" for multiplication)
- 14. Fill in the Blank
Using index notation, write down the LCM of 72, 96 and 120.
(Hint: use the letter "x" for multiplication and the symbol ^ for "to the power of")
- 15. Open Ended
Write your answer for the HCF and LCM of 14, 18 and 21.
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