Three-Digit Word Problems: Estimating Sums & Differences

Lily has 245 marbles. She buys 378 more. How many marbles does she have now?

• 500

• 700

• 600

• 623

A bookstore sold 512 books last month and 289 books this month. How many books did they sell in total?

• 700

• 900

• 600

• 801

Tom has 654 stickers. He gives away 237 stickers to his friends. How many stickers does he have left?

• 654 stickers

• 417

• 417 stickers

• 237 stickers

A farmer harvested 432 apples and then picked 289 more. Estimate how many apples he has now.

• 700

• 600

• 500

• 800

Sarah read 145 pages of a book. If she reads 256 more pages, how many pages will she have read in total?

• 512

• 401

• 256

• 145

There are 789 students in a school. If 456 students are in the morning session, how many are in the afternoon session?

• 789

• 333

• 456

• 222

A toy store had 345 toys. They sold 178 toys. How many toys are left in the store?

• 145

• 200

• 178

• 167

Estimate the total number of candies if a jar has 123 candies and another jar has 456 candies.

• 789

• 123

• 456

• 579

A library has 678 books. If they donate 245 books, how many books will they have left?

• 400

• 450

• 433

• 423

Emma collected 234 seashells and found 567 more. How many seashells does she have altogether?

• 567

• 1000

• 801

• 234