Estimation
Word Problems
Sum
Difference
100

Estimate 32,475 to the nearest thousand? 

32,000

100

Your friends heart beats 45,100 times during school. Your heart beats 37,900 times during school. How many fewer times does your heart beat than your friends? 

7,200 times 

100

6,439 + 3,278 =__________-

9,717

100

9,256 - 7,183 =_____________

2,073

200

Round each number to the nearest thousand to find the estimated sum: 

18,212 + 7,589 =__________

18,000 + 8,000 = 26,000

200

A moving truck weighs 26,000 pounds. After some equipment is removed, the truck weighs 19,775 pounds. Then 6,350 more pounds of equipment are removed. How many pounds of equipment are removed in all?

Show your work! 

26,000-19,775 = 6,225 pounds

6,225 + 6,350 = 12,575 

There were 12,575 pounds removed from the truck in all. 
200

68,420 + 15,319 = _____________

83,739

200

84,923 - 32,816=____________

52,107 

300

Estimate each number to the nearest thousand to find the estimated difference: 

81,327 - 32,475 = ___________

81,000 - 32,000 = 49,000

300

In July, a website receives 79,162 fewer orders than in May and June combined. The website receives 42,369 orders in May and 53,708 orders in June. How many orders does the website receive in July?

Show your work!

42,369 + 53,708 = 96,077

96,077 - 79,162 = 16,915

There were 16,915 orders in July. 

300

25,890 + 13,579 =____________

38,469

300

43,629 - 18,101 =___________

25,528

400

Estimate each number to the nearest thousand to find the estimated sum: 

64,008 + 78,649 =__________

64,000 + 79,000 = 143,000

400

The blackpoll warbler migrates 2,376 miles, stops, and then flies another 3,289 miles to reach its destination. The arctic tern migrates 11,013 miles, stops, and then flies another 10,997 miles to reach its destination. How much farther is the arctic tern's migration than the blackpoll warbler's migration?

Show your work! 

2,376 + 3,289 = 5,665 miles 

11,013 + 10,997 = 22,010 miles 

22,010 - 5,665 = 16,345 

The arctic tern flies 16,345 miles further than the blackpoll warbler. 

400

Solve and estimate the sum to the nearest thousand.

65,019 + 34,802 =__________

99,821 

100,000

400
Find the difference and estimate to the nearest thousand. 


60,470 - 30,281 = ____________

30,189 

30,000

500

Estimate each number to the nearest thousand to find the estimated difference: 

47,890 - 39,842 = ___________

48,000 - 40,000 = 8,000

500

A car owner wants to sell his car when the odometer reads 100,000 miles. The owner bought his car with 44,901 miles on it. He drives a total of 27,298 miles over the next two years. How many more miles can he drive before he sells the car? 

Show your work! 

44,901 + 27,298 = 72,199 

100,000 - 72,199 = 27,801 

He can drive 27,801 more miles before he sells his car. 
500

Solve and estimate to the nearest thousand. 

54,341 + 37,899 =___________

92,240 

92,000

500

Find the difference and estimate to the nearest thousand. 

64,507 - 23,569 =___________

40,938 

41,000

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