Level 2 PSLE The sum of two numbers is 68. One of the numbers is a multiple of 7. The other number is a factor of 15. What is the difference between the 2 numbers?
Number 1 + Number 2 = 68
Number 1 is a factor of 15.
Factors of 15: 1, 3, 5, 15
Number 2 is a multiple of 7.
To be a multiple of 7, Number 2 must have no remainder when divided by 7.
Number 1 |
Number 2 |
Is Number 2 is a multiple of 7? |
Is the remainder 0? |
15 |
68 - 15 = 53 |
53 ÷ 7 = 7 r 4 |
x |
5 |
68 - 5 = 63 |
63 ÷ 7 = 9 r 0 |
✓ |
Difference between the 2 numbers
= 63 - 5
= 58
Answer(s): 58