Example
What numbers less than 75 are multiples of both 5 and 7?
Answer:
Multiples of 5 are 5,10,15,20,25,30,35,40,45,50,55,60,65,70
Multiples of 7 are
7,14,21,28,35,42,49,56,63,70
Exercise 1.3
1. Write down the first six multiples of 9
2. List the first three multiples of each of these numbers
a. 9 b. 5 c. 20 d. 12
3. Find the lowest common multiples for each pair of numbers
a. 4 and 6 b. 5 and 6 c. 4 and 10
4. 40 is a multiple of 1 and of 40 and of two other numbers. What are the other two numbers?
5. Find the fift multiple of each of these numbers
a. 7 b. 32 c. 47 d. 19