Module 1: Number Systems
- Jun 1, 2016
- 1 min read
Write a number as the product of its prime factors (Note: always start from the smallest divisible prime number)
2 | 84 |
2 | 42 |
3 | 21 |
7 | 7 |
1 |
LCM and HCF:
Lowest common multiple (LCM): Smallest number into which all the numbers can divide.
Highest common factor (HCF): Largest number that can divide into all the numbers.
Example of LCM and HCF:
2 | 36 | 2 | 60 | 2 | 90 | ||
2 | 18 | 2 | 30 | 3 | 45 | ||
3 | 9 | 3 | 15 | 3 | 15 | ||
3 | 3 | 5 | 5 | 5 | 5 | ||
1 | 1 | 1 |