Chapter 1 Flashcards
0
Q
What is the HCF?
A
The largest factor which is common to two or more natural numbers
1
Q
What are factors?
A
All the natural numbers which divide into it leaving no remainder
Eg - Factors of 10 are 1 2 5 10
2
Q
What is LCM?
A
The smallest multiple which is common to two or more natural numbers
3
Q
How to tell if a number is divisible by 2
A
The last digit is even or 0
4
Q
How to tell if a number is divisible by 3
A
Sum of all digits is divisible by 3
5
Q
How to tell if a number is divisible by 4
A
Number formed by last 2 digits is divisible by 4
6
Q
How to tell if a number is divisible by 5
A
The last digit is 0 or 5
7
Q
How to tell if a number is divisible by 6
A
It is divisible by 3 and is even
