Level 2 PSLE The sum of two numbers is 47. One of the numbers is a multiple of 7. The other number is a factor of 25. What is the difference between the 2 numbers?
Number 1 + Number 2 = 47
Number 1 is a factor of 25.
Factors of 25: 1, 5, 25
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? |
25 |
47 - 25 = 22 |
22 ÷ 7 = 3 r 1 |
x |
5 |
47 - 5 = 42 |
42 ÷ 7 = 6 r 0 |
✓ |
Difference between the 2 numbers
= 42 - 5
= 37
Answer(s): 37