1. Number and place value
1.05 Rounding numbers to 10's
Lesson
Are you ready?
We've seen how to model place value to work out the value of digits. Understanding how to do this will help us with our estimating.
Use the least amount of blocks possible to make the number $14$14.
- No items were dropped
Vocabulary:
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Another word that we can use to describe the ones place is 'units'.
Learn
Sometimes we may need to solve problems by estimating. We can see if our number is closer to the ten before it, or after it. Let's see how we round our number to the nearest ten.
Apply
Question 1
Round $84$84 to the nearest ten.
Remember!
- If you are rounding a number to the nearest $10$10, think about whether it is closer to the one above, or the one below. For example, $20$20 or $30$30.
- If a number is exactly in the middle, round to the higher number.
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This is the same for hundreds.