Multiplication Facts
Rounding
Standard Algorithm
Word Problems
Estimation
100

2 x 5=

10

100

Round to the nearest ten thousand.


10,586

10,000

100

23,607 + 2,307=

25,914

100

The office supply closet had 25,473 large paper clips, 13,648 medium paper clips, and 15,306 small paper clips. How many paper clips were in the closet?


There were 54,427 paper clips in the closet.

200

4 x 3=

12

200

Round to the nearest ten thousand.

449,569

450,000

200

258,983 + 121,897=



380,880

200

A baseball stadium sold some burgers. 2,806 were cheeseburgers. 1,679 burgers didn't have cheese. How many burgers did they sell in all?

4,485 burgers were sold.

300

5 x 4=

20

300

Round to the nearest hundred thousand.

583,205

600,000

300

547,982 + 114,849=

662,831

300

During the month of March, 68,025 pounds of king crab were caught. If 15,614 pounds were caught in the first week of March, how many pounds were caught in the rest of the month?


52,411 pounds of king crab were caught in the rest of the month.

400

6 x 7=

42

400

Round to the nearest hundred thousand.

335,593

300,000

400

97,684 - 47,705 =

49,979

400

What number must be added to 1,575 to result in a sum of 8,625?


7,050 must be added to 1,575 to result in a sum of 8,625

500

9 x 8=

72

500

Round to the nearest million.

5,493,295

5,000,000

500

124,060 - 31,117 =

92,943

500

A gas station had two pumps. Pump A dispensed 241,752 gallons. Pump B dispensed 113,916 more gallons than Pump A. Exactly how many gallons did both pumps dispense?


Both pumps dispensed 597,420 gallons of gas.

500


On Monday, a farmer sold 25,196 pounds of potatoes. On Tuesday, he sold 18,023 pounds. On Wednesday, he sold some more potatoes. In all, he sold 62,409 pounds of potatoes. About how many pounds of potatoes did the farmer sell on Wednesday? Estimate by rounding each value to the nearest thousand, and then compute.


About 19,000 potatoes were sold on Wednesday