Three Digit Addition and Subtraction

452

-245

_______

• 213

• 203

• 107

• 207

Estimate the sum of 120+190 by rounding to the nearest hundred.

• 300

• 310

• 200

• 400

Estimate the answer by rounding to the nearest ten.

506 + 397

• 900

• 800

• 910

• 903

What is my first step when adding and subtracting?

• Go to the tens place

• Go to the hundreds place

• Go to the units place

• Go to the thousands place

380 + 446 = ___

• 826

• 726

• 726

456+278

651 + 349 =  

• 990

• 1,000

• 1,900

• 9,910

401 - 86 = 

• 325

• 425

• 315

• 415

984 - 321 = ___

• 663

• 682

• 630

756 + 134 = ___

• 743

• 890

• 811