Adding Three-Digit Numbers

Round to the nearest hundred and then find the sum.126 + 171 =

• 200

• 300

• 290

• 310

709 + 94 =

• 803

• 804

• 800

• 813

Mina's class collects 368 cans to recycle.
Will's class collects 254 cans.
How many hundreds are there in all?

• 500

• 300

• 200

• 400

Allison added 157 to 296 and got 343.
This is not the correct answer.
What did Allison do wrong?

• She did not regroup

• She subtracted

• She multiplied

• She did not add the hundreds place

600+300=

435+100=

34+347=

65+528=

331+472=

661 + 99 = _____

• 760

• 660

• 750