Level 2 PSLE The sum of two numbers is 75. One of the numbers is a multiple of 7. The other number is a factor of 10. What is the difference between the 2 numbers?
Number 1 + Number 2 = 75
Number 1 is a factor of 10.
Factors of 10: 1, 2, 5, 10
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? |
10 |
75 - 10 = 65 |
65 ÷ 7 = 9 r 2 |
x |
5 |
75 - 5 = 70 |
70 ÷ 7 = 10 r 0 |
✓ |
Difference between the 2 numbers
= 70 - 5
= 65
Answer(s): 65