Idea 22of 24Builds onWhat is left over
Round up, or leave the remainder out
What should you do with a remainder in a story?
Today you'll discover
- when to add one more group
- when to leave the leftover out
- why a story answer has no R
Think first130 students, 24 to a bus
130 students go on a trip, 24 to a bus. How many buses are needed?
Decide first, then press Next. Ask what the leftover is in the story.
A long empty bar under the story 130 students, 24 to a bus. It fills with 5 equal pieces marked 24, then a short dashed piece marked 10 left, with 130 ÷ 24 = 5 R10. Then a dashed outline for one more bus and the answer 6 buses. Then 150 stickers in 12 packs of 12 with the 6 left over crossed out. The last step shows 200 eggs in cartons of 12.
See the whole ideathe big idea and the key word, in one place
The big idea
The story decides: round up when everyone needs a place; drop the remainder for full groups.
Compare themBuses for 130 students: round up to 6. Full packs from 150 stickers: leave the leftover out, 12.
Easy to get wrongNever answer a story with R. Say what the remainder means for the people or the things.
Key word
- round up
- go to the next whole number, so nothing and no one is left out
Ready to use it?
- Decide whether to round up or leave out a remainder.
- Answer a division story in its own words.