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Course: 4th grade (2018 edition)>Unit 8

Lesson 6: Rounding whole numbers

Rounding whole numbers word problems

Sal solves word problems by rounding whole numbers to the nearest ten, hundred, or thousand.

Want to join the conversation?

• I don't understand the second question... why did he go to the tens place?
• In order to round to the hundreds place, you have to look at the tens place to decide whether to round up or down.

If the number in the tens place is between 0 and 4, you round down:
- ones place becomes 0
- tens place becomes 0
- hundreds place stays the same

If the number in the tens place is between 5 and 9, you round up:
- ones place becomes 0
- tens place becomes 0
- hundreds place goes up one

Examples:

3856
- tens place is 5, so round up to 3900

9214
- tens place is 1, so round down to 9200

Just remember that whatever place you are rounding to, you need to look at the number one place to the right to decide whether to round up or round down.

Hope this helps!
• The video is about 3 min i rounded:)
• I don't get it on the second question.
• what do you not understand. let me guess. 1,2,3 and 4 round down while 5,6,7,8, and 9 round up. if it rounds to the tens it means you need to look at the ones. rounding to the hundred means you need to depend it on the tens. Anything else I could help you with? :)
• Wait…why does 5 round up?
• Everything below 5 rounds down.
Everything 5 or greater rounds up.
• legit i dont under stand like fr
• if the number in the hundreds place is lower than five,he rounds down,so that means you round every number below!
• why do we need to round
• I feel like this should have been taught at an earlier grade. Im pretty sure we did this on here too before, didnt we?
• Yes we did
(1 vote)
• anything less than five would be rounding down right?