Estimation with Division
Division with 1-digit divisors
Division Strategies
100
There are 256 people coming to a banquet. Each table seats 10 people. How many tables need to be set up to seat everyone?
26 so that everyone will have a seat.
100
solve 7,244 ÷ 4
1,811
100
You need to have answers for b, h, and the final answer to the equation as a whole.
b = 90
h = 192 units
answer: 192 remainder 1
200
Ms. Rodman is putting golf balls into 7 boxes. She wants about the same number in each box. If she has 507 golf balls about how many could she put in each box? Use compatible numbers to solve.
If you change 507 to 490 for a compatible number. It will be about 70 balls in each box because 490 divided by 7 is 70.
200
solve 4,487 ÷7
641
200
1st - 200
2nd - 40
3rd - 7
300
Jamaal and his parents are planning a 7-day bike ride from Sacramento to Bakersfield. The distance between the two cities is 271 miles. If Jamaal wants to ride about the same number of miles each day, about how many miles should he ride each day? Use compatible numbers to solve.
If you change 271 to 280, it turns into 280 divided by 7 and that would be about 40 miles a day.
300
solve 6,246 ÷3
2,082
300
What is the quotient of 1,976 divided by 8?
247
400
Roberto is collecting stuffed toys to donate to 8 different charities. He wants to donate about the same amount to each charity. If Roberto collected 711 stuffed toys, about how many should he donate to each charity?
About 90 stuffed toys. If you change 711 to 720 and divide by 8, you get about 90 toys.
400
solve 5,409 ÷ 9
601
400
What is 5,360 divided by 5?
1,072
500
If you want to use compatible numbers to estimate 363 ÷ 8, is it better to use
320 ÷ 8 or 400 ÷ 8? Explain.
It would be better to use 400 divided by 8 because, that is closer to the actual number being divided. 400 is only 37 away from 63, but 320 is 43 away from 320.
500
Solve 12,426 ÷ 6
2,071
500
Use the model to tell the answers of each box. a, b, c and d.
a = 1,000
b = 60
c = 10
d = 2