Level 2 PSLE The sum of two numbers is 109. One of the numbers is a multiple of 10. The other number is a factor of 27. What is the difference between the 2 numbers?
Number 1 + Number 2 = 109
Number 1 is a factor of 27.
Factors of 27: 1, 3, 9, 27
Number 2 is a multiple of 10.
To be a multiple of 10, Number 2 must have no remainder when divided by 10.
Number 1 |
Number 2 |
Is Number 2 is a multiple of 10? |
Is the remainder 0? |
27 |
109 - 27 = 82 |
82 ÷ 10 = 8 r 2 |
x |
9 |
109 - 9 = 100 |
100 ÷ 10 = 10 r 0 |
✓ |
Difference between the 2 numbers
= 100 - 9
= 91
Answer(s): 91