Estimate by highest place
Estimate by nearest 100
Addition
Subtraction
Word Problems
100

1,575 + 783

2,000 + 800=10,000

100

6,742 - 964

6,700 - 1,000 =5,700

100

2,973 + 4,159

7,132

100

5,570 - 235

5,335

100

Jared spent $2,080 one year on guitar lessons and $3,120 on voice lessons. 

How much more did the voice lessons cost than the guitar lessons?

$1,040

200

8,976 + 87

9,000 + 90 = 9,090

200

6,502 - 2,360

6,500 - 2,400= 4,100

200

5,986 + 76

6,062

200

5,483 - 3,397

2,086

200

Jared spent $2,080 one year on guitar lessons and $3,120 on voice lessons. 

How much did he spend on both types of lessons that year? 

$5,200

300

1,309 + 3,494

1,000 + 3,000 = 4,000

300

4,285 + 468

4,300 + 500 = 4,800

300

4,589 + 5,125

9,714

300

9,735 - 657

9,078

300

The United States of American was founded on July 4, 1776. On July 1, 1867, Canada was founded. How many years passed between the foundation of the two countries? 

91 years

400

6,428 + 2,539

6,000 + 3,000 = 9,000

400

8,088 - 3,509

8,100 - 3,500=4,600

400

3,456 + 5,768

9,224

400

8,420 - 3,363

5,057

400

A store sold 3,520 red, white, and green shirts altogether. The store sold 1,200 red shirts and 870 white shirts. How many green shirts did the store sell? 

1,450 green shirts

500

225 + 750 + 625

200 + 800 + 600=1,600

500

1,487 + 265 + 2,277

1,500 + 300 + 2,300=4,100

500

5,555 + 555 + 55 + 5

6,170

500

Fill in the blank: 

6,003 - _________ = 4,128

1,875

500

A doughnut shop sold 3,250 glazed doughnuts in the first week of the month. The shop sold 450 more doughnuts in the second week than the first week. How many doughnuts did the shop sell in the two weeks altogether?

6,950 doughnuts in two weeks altogether