Three-Digit Subtraction

Subtraction

100

800-308=

492

200

606-436

170

300

900-696

204

400

905-486

419

Word Problems

100

The concert hall sold 28 fewer tickets for the Sunday concert than for the Friday concert. They sold 251 tickets on Friday. About how many tickets were sold for the Sunday concert? 

223

200

There were 506 tickets sold on Wednesday and 251 tickets sold on Friday. About how many more tickets were sold on Wednesday than Friday? 

255

300

A Brachiosaurus is 81 feet long and a Tyrannosaurus rex is 39 feet long. About how much feet longer was the Brachiosaurus than the Tyrannosaurus?

42

400

There are 365 days in a year on Earth and 88 days in a year on Mercury. What is the difference in days in a year on Earth and Mercury? 

277

Rounding

100

Round 39 to the nearest ten.

40

200

When rounding to the nearest ten, what digit should you underline?

The digit in the tens place.

300

Round 473 to the nearest ten.

470

400

Round 268 to the nearest hundred.

300

Addition

100

554+358

912

200

422+226

648

300

691+293

984

400

300+143

443

Bonus

100

What is it called when I take a number from another place value so I can subtract? 

Borrowing/ regrouping 

200

547-254

293

300

805-454

351

400

Is it true? 

874-684=190

True