Level 1
Sock Hoon had about $280 after rounding off the money to the nearest ten. She spent $79. What was the smallest possible amount of money she had left?
2 m
Level 1
The amount of money Tom has is about $800 when rounded off to the nearest $100. What is the greatest possible amount of money that Tom has?
2 m
Level 2
Using the digits, arrange and form the largest 5-digit even number.
7, 9, 0, 6, 2.
2 m
Level 2
What is the difference between the smallest 4-digit odd number and the greatest 3-digit even number?
2 m
Level 2
A number when rounded off to the nearest ten gives a value of 24350.
  1. What is the smallest possible number?
  2. What is the largest possible number?
2 m