Level 2 PSLE The sum of two numbers is 79. One of the numbers is a multiple of 9. The other number is a factor of 14. What is the difference between the 2 numbers?
Number 1 + Number 2 = 79
Number 1 is a factor of 14.
Factors of 14: 1, 2, 7, 14
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? |
14 |
79 - 14 = 65 |
65 ÷ 9 = 7 r 2 |
x |
7 |
79 - 7 = 72 |
72 ÷ 9 = 8 r 0 |
✓ |
Difference between the 2 numbers
= 72 - 7
= 65
Answer(s): 65