Addition
subtraction
word problems
Estimation
100

97,157+4=

97,161

100

17,999-6,842=

11,157

100

A food company surveyed its customers. They found 15,332 preferred the old banana muffins, while 96,982 preferred the new cornbread ones. How many customers responded to the survey?

112,314

100

Estimate the sum by rounding each number to the nearest ten thousand and then adding.

34,389 + 41,331

30,000+40,000= 70,000

200

8,656+3,354=

12,010

200

49,047-23,765=

25,282

200

A honey wholesale company harvests 56,257 kilograms of honey and 15,766 kilograms of wax from its hives. How many kilograms of bee product can it sell?

72,023 kg

200

Estimate the sum by rounding each number to the nearest hundred and then adding.

549 + 273

500+300=800

300

563,335+77,985=

641320

300

824,019-201,596

622,423

300

A petri dish contained 7,497 bacteria. A scientist let the bacteria grow until there were 373 more of them. How many bacteria are there now?

7,870

300

Estimate the sum by rounding each number to the nearest thousand and then adding.

8,709 + 1,783

9,000+2,000=11,000

400

25+2+4,217=

4,244

400

6,598,436-65,892=

6,532,544

400

Springtown had 4,642 people before it became a stop on the railroad. Now, there are 1,817 more people living there. How many people live in Springtown now?

6,459 people

400

Estimate the sum by rounding each number to the nearest ten thousand and then adding.

56,362 + 98,662

60,000+100,000=160,000

500

2040+706+1011=

3757

500

47,685,868-13,612,713

34,073,155

500

Students at Clarksville schools are participating in a coat drive. 53,568 coats have been collected so far. 7,596 coats were collected from the high schools, and the rest from the elementary schools. How many coats were collected at the elementary schools?

45,972

500

Estimate the sum by rounding each number to the nearest thousand and then adding.

578,483,287 + 394,347,898

578,483,000+ 394,348,000=972,831,000