Level 2 PSLE The sum of two numbers is 69. One of the numbers is a multiple of 9. The other number is a factor of 12. What is the difference between the 2 numbers?
Number 1 + Number 2 = 69
Number 1 is a factor of 12.
Factors of 12: 1, 2, 3, 4, 6, 12
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? |
12 |
69 - 12 = 57 |
57 ÷ 9 = 6 r 3 |
x |
6 |
69 - 6 = 63 |
63 ÷ 9 = 7 r 0 |
✓ |
Difference between the 2 numbers
= 63 - 6
= 57
Answer(s): 57