Use compatible numbers, to find the estimate of 168/45.
Sample Answer:
160/40= 40
100
360/40=
9
100
192/16=
12
100
The football coach spent a total of $890 including $50 in tax for 35 shirts for the team. Each shirt cost the same amount. What was the price of one shirt before tax was added?
$24
200
Use compatible numbers to estimate 525/96.
Sample Answer: 500/200=5
200
270/90=
3
200
570/30=
19
200
A gymnast practices 6 days each week. She practices the same number of hours each day. If she practices a total of 120 hours in a 4-week period, how many hours each days does she practice?
5 hours each day
300
Use compatible numbers to estimate 379 / 63.
Sample Answer: 360/60=60
300
2,100 / 30=
70
300
5,170/47=
110
300
Nathan works the same number of hours each day, 5 days each week. He earns $12 per hour. Last week he earned $420. How many hours did he work each day last week? Write equations to model your work.
Sample equations:
420/12=35; 35/5=7
7 hours
400
Use compatible numbers to estimate 234/72.
Sample Answer: 210 / 70=3
400
4,800 / 80=
60
400
2,941 / 28=
105 R1
400
Ivan uses 30 craft sticks to make each toy cabin. He has a box of 342 craft sticks. How many toy cabins can Ivan make? How many sticks will be left?
11 toy cabins; 12 sticks left
500
Sally used compatible numbers to estimate 367/6. He said that 50 was a good estimate because 300/6= 50. Do you agree? Explain why or why not.
Answers may vary. However, 360/6=60 would have been a better estimate.
500
81,000/90=
900
500
12,345 / 67=
184 R17
500
Create your own word problem using 769 as your dividend and 23 as your divisor.
Answers may vary, but the quotient should be 33 R10.