ESTIMATION & ROUNDING COMPARING NUMBERS ADDITION/SUBTRACTION MULTIPLICATION/DIVISION PERIMETER/AREA
100
What is 90,532 rounded to the nearest thousandths place?
91,000
100
COMPARE
868,527____ 236,029
>,<, or =
>
100
243,118 + 612, 741
855,859
100
A printing company has 6 printing machines.
Each printing machine costs $4,500. How much did the company pay for the machines?
The company paid $27,000 for the machines.
100
Peter's desk is 48 inches long and 36 inches wide. What is the area and perimeter of his desk?
Area = 1,728 square inches
Perimeter = 168 inches
200
The first bus had 96 passengers and the second bus had 107 passengers. There are about ________ passengers into total.
200
200
COMPARE
98,989 ____ 98,899
>,<, or =
>
200
854,167 - 481,959
372,208
200
A hotel has 7 floors. The lobby, restaurant and gym are located on the ground floor. The guestrooms are on 1st to 6th floors.
There are 18 suites altogether in the hotel, how many suites are there on each floor if each floor has the same floorplan?
There are 3 suites on each floor.
200
The area of my math textbook is 48 inches. If the book is 8 inches long, how wide is it?
The book is 6 inches wide.
300
In a city, there are 45,960 electric cars and 96,113 gas cars. There are about ________ more gas cars than electric cars.
50,000
300
COMPARE
55,666 _____ 675,365
>,<, or =
<
300
601,550 + 424,316
1,025,866
300
Melanie worked at a dog park. There were 16 dogs there. 67 people showed up with three dogs each. How many dogs are there in total now?
There are 217 dogs in total.
300
What is the area of this classroom if it is 12 feet long and 10 feet long?
The area of the classroom is 120 feet.
400
There are about 310 passengers in each car of the city train. As there are 8 cars for each train, there are about ________ passengers on each train.
2,400
400
COMPARE
1,111,121 _______ 1,111,121
>,<, or =
=
400
872,171 - 215,850
656,321
400
The high school art teacher has 9 cases of crayons with 52 boxes in each case. The elementary school art teacher has 6 cases of crayons with 104 boxes in each case. How many total boxes of crayons do both teachers have?
Both teachers have 1,092 boxes of crayons.
400
The area of Commonwealth Ave Elementary is 42 miles. If the length is 7 miles. What is the perimeter?
The perimeter is 26 miles.
500
A pilot flies 5 trips totaling 7,531 miles in a day. Each trip is about ________ miles.
1,500
500
COMPARE
886,579 _____ 868,579
>,<, or =
>
500
425,507 - 346,689
78,818
500
Ms. Lee has 483 raffle tickets for the upcoming carnival. She wants to give them out equally amongst her 32 students. How many would each student get? How many would Ms. Lee have left over?
Each student would get 15 raffle tickets.
Ms. Lee would have 3 left over.
500
The perimeter of the basketball court is 288 feet. If the width is 50 feet, what is the length?
The length is 94 feet.






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