Chapter 2 Math Review - 3rd Grade

Three Digit Addition

100

381+216=

597

200

497+ 201=

698

300

456+123=

579

400

730+220=

950

500

999 + 999 = 

1, 998

Three Digit Addition with rounding (100's)

100

Estimate by rounding to the nearest hundred.

133 + 288 = 

400

200

Estimate by rounding to the nearest hundred.

359 + 227 = 

600

300

Estimate by rounding to the nearest hundred. 

588 + 313 = 

900

400

Estimate by rounding to the nearest hundred. 

422 + 387 = 

800

500

Estimate by rounding to the nearest hundred.

1,581 + 1,342 = 

1900

Three Digit addition with rounding (10's)

100

Estimate by rounding to the nearest ten.

468 + 417 =  

890

200

Estimate by rounding to the nearest ten. 

293 + 168 = 

470

300

Estimate by rounding to the nearest ten.

638 + 374 = 

1,010

400

Estimate by rounding to the nearest ten.

602 + 287

890

500

Estimate by rounding to the nearest ten.

1,787 + 1, 136 = 

2,930

More Three Digit Addition with three addends

100

293 + 327 + 132= 

752

200

419 + 318 + 227 = 

964

300

243 + 198 + 307= 

748

400

167 + 298 + 399 =

864

500

127 + 118 + 198 + 429

872