1. Number and place value
1.09 Rounding numbers to 100's
Lesson
Are you ready?
We've seen how to round numbers to $10$10's. Understanding how to do this will help us with rounding to $100$100's.
Round $54$54 to the nearest ten.
Learn
Sometimes we may need to solve problems by estimating. We can see if our number is closer to the hundred before it, or after it. Let's see how we round our number to the nearest hundred.
Apply
Question 1
The number $313$313 is plotted on the number line.
Round $313$313 to the nearest $100$100 and plot it on the blank number line.
Question 2
Round $370$370 to the nearest hundred.
Remember!
- If you are rounding a number to the nearest $100$100, think about whether it is closer to the one above, or the one below.
- If a number is exactly in the middle, round to the higher number.
-
This is the same as it was for rounding to the nearest $10$10, but one place value higher.