Mental Math
6,300 ÷ 90 =
70
Estimate using compatible numbers.
554 ÷ 62
540 ÷ 60 = 90 (Or a close answer)
Show all work.
210 ÷ 15
14
Solve using long division.
966 ÷ 23
42
56,000 ÷ _____ = 800
70
Estimate using compatible numbers.
4,322 ÷ 81
4000 ÷ 80 = 50 (Or close answer)
Show all work.
247 ÷ 19
13
375 ÷ 40
9 R15
Ella wants to divide 480 oranges equally into 60 baskets. How many oranges will she put in each basket?
8 oranges
A company purchased 3,128 bottles of water. Each department needs 55 bottles. Find compatible numbers to estimate the number of departments that can get the bottles they need.
3000 ÷ 60 = 50 departments
A 969-acre wildlife preserve has 19 cheetahs. How many acres does each cheetah have to itself, if each cheetah roams the same number of acres? Solve using partial quotients.
51 acres
Rita's family is moving from Grand Junction to Dallas. The distance is about 980 miles. The moving van goes about 60 miles each hour. How many hours does the van take to reach Dallas? Round your answer to the nearest whole number. Solve using long division.
About 16 or 17 hours.
Ten friends won the grand prize in the raffle. They won a gift card for two thousand digital song downloads. How many songs can each friend download if they divide the prize equally?
200 songs
Janelle earned $889 in 3 months for babysitting. If she was paid the same amount for each month, about how much did she earn per month?
She earned about $300 each month.
At the county fair, the Ferris wheel takes five hundred fifteen seconds to revolve five times. How long will one revolution take? Solve using partial quotients.
103 seconds
It takes the planet Mars eight thousand two hundred forty-four days to make twelve complete orbits around the sun. How many days does it take for Mars to complete one orbit?
687 days
If Jasmine roller skates two hundred eighty miles in seven weeks and skates the same distance each week, how many miles does she skate each week?
40 miles
Roberto is collecting stuffed toys to donate to eight 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?
He should donate about 90 toys to each charity.
The Merry-go-round takes six hundred nine seconds to revolve 3 times. The Roller coaster takes 832 seconds to revolve 4 times. Which ride takes longer for 1 revolution? How many seconds does that ride take? Use partial quotients to solve.
Roller Coaster takes longer for one revolution. One revolution takes 208 seconds.
A score is a group of twenty things. For example, a period of twenty years is called a score of years. The Statue of Liberty was dedicated in 1886. About how many scores of years ago was that? Round to the nearest whole number.
94 or 95 years