Year 4 Place Value – What is my original number?

Round any number to the nearest 10, 100 or 1,000.

Investigation sheet

 

Investigation: What is my original number?

 

 

 

I have rounded a number to the nearest 100.

My answer is 900.

 

Can you work out what my number could be based on these clues:


My number is odd.
There is one 8 in my number.
The sum of the digits in my number total 22.

Think about the different strategies that you could use. Which sets of numbers can you eliminate immediately?


Answer:

The three numbers that could round using these parameters are

859, 877, 895.