Level 2 PSLE The sum of two numbers is 80. One of the numbers is a multiple of 9. The other number is a factor of 16. What is the difference between the 2 numbers?
Number 1 + Number 2 = 80
Number 1 is a factor of 16.
Factors of 16: 1, 2, 4, 8, 16
Number 2 is a multiple of 9.
To be a multiple of 9, Number 2 must have no remainder when divided by 9.
Number 1 |
Number 2 |
Is Number 2 is a multiple of 9? |
Is the remainder 0? |
16 |
80 - 16 = 64 |
64 ÷ 9 = 7 r 1 |
x |
8 |
80 - 8 = 72 |
72 ÷ 9 = 8 r 0 |
✓ |
Difference between the 2 numbers
= 72 - 8
= 64
Answer(s): 64