Estimation Station
Use estimation to solve: 248÷5
Rounding: I rounded to 248 to 250. Then I used mental math to divide 25÷5 which is 5 and added a 0 to the end. So, 248 ÷ 5 is about 50.
Compatible Numbers: 248 is close to 250. 250 ÷ 5 is 50 so, 248 ÷ 5 is about 50.
18÷4= ____ with ____ left over
4 with 2 left over
Use a model to help you solve: 66÷4
Draw a bar diagram, a picture, or use base ten blocks.
90÷6
15
Chris has 95 toy cars. He arranges his cars in 5 equal rows. How many cars will be in each row?
There will be 19 cars in each row.
Estimate the following: 620 ÷ 7
620 is close to 630. 63÷7=9, so 620÷7 is about 90.
32÷9= ____ with ____ left over.
3 with 5 left over
Use a model to help you solve 71÷3
Bar diagram, draw a picture, or use base ten blocks.
78÷2
39
Eight laps of a pool is equal to one mile. Victor swam 128 laps last week. How many miles did Victor swim?
Victor swam 16 miles.
Ada sold 250 mugs in 3 weeks. About how many mugs did Ada sell each week?
Ada sold about 80 mugs per week.
250 is close to 240. 240÷3 is 80.
There are 14 girls trying out for the volleyball team. Each teach will have 6 players. How many full teams will be made? How many girls will not make the team?
There will be 2 full teams made, 2 girls will not make the team.
Marcos has 78 toy cars. He arranges the toy cars into 6 equal groups. How many toy cars are in each group?
Draw a model to help solve the problem.
Draw a picture or use base ten blocks.
57÷3
19
Georgia has 84 pictures she wants to organize in a photo album. How many pages will Georgia have if she 4 pictures on every page?
Georgia will have 21 pages.
Multi-Step problem:
Diana set a goal to ride her bicycle 310 miles in a month. She has biked 145 miles so far. If there are only 4 days left in the month, about how many miles should Diana ride each day to reach her goal? (Use compatible numbers!)
310-145=165
165÷4=m
165 is close to 160, 160÷4= 40.
Diana would need to ride about 40 miles each day to complete her goal.
71 cards
5 cards in each box
71÷5= ___ with ___ left over
*How many boxes are needed for all the cards?
14 with 1 left over.
You will need 15 boxes for all the cards.
Jamal has 20 marbles to put into bags. He plans to put 6 marbles in each bag. How many bags will Jamal be able to fill equally with how many left over?
Draw a model to help you solve.
Jamal will be able to fill 3 bags with 2 left over.
91÷7
13
Georgia has 84 pictures she wants to organize in a photo album. How many more pages of the album will be used if Georgia puts 4 pictures on each page than if she puts 6 pictures on each page?
Georgia will use 7 more pages.
Explain how to find a better estimate for 260÷5 than the one shown below.
Round 260 to 300. 300÷5=60 so, 260÷5 is about 60.
Instead of rounding, use compatible numbers.
260 is close to 250.
25÷5=5, and add the zero onto the end.
So, 260÷5 is about 50.
There are 84 stickers. 5 stickers can fit on each page. Answer the following questions:
A. How many pages are complete?
B. How many stickers are on the last page?
C. How many pages will have some stickers on them?
B. There are 4 stickers on the last page.
C. 17 pages will have some stickers on them in total.
Paulo has 39 patches from the states he and his relatives have visited. He wants to pin them onto a board ad arrange them equally in 3 rows. How many patches will be in each row?
Draw a model to solve this problem.
Each row has 13 patches.
84÷6
14
A shipment of 8 boxes was delivered to Mason's Bookstore. Each box holds the same number of books. If there are 744 books in the shipment, how many books are in each box?
There are 93 books in each box.