Add
Sub
Estimate
100

345+976=

1,321

100

425-369=

56

100

356-234

200

200

1,743+3,865=

5,608

200

1,326-899=

427

200

2,845-1,567=

1,000

300

28,932+51,006=

79,938

300

14,233-6,899=

7,334

300

Round each whole number to the nearest thousands and solve

14,800+ 12,099=

27,000

400

158,623+26,888=

185,511

400

125,322-69,222=

56,100

400

Round to the ten thousands place

50,987 + 58,000+

110,000

500

1,259,999+299,456,222=

300,716,221

500

320,004-24,987=

295,017