Estimating Sums & Differences in Word Problems

A bakery made 245 cookies in the morning and 378 cookies in the afternoon. How many cookies did they make in total?

• 623

• 700

• 600

• 500

There are 512 books in the library. If 129 books are checked out, how many books are left in the library?

• 450

• 400

• 383

• 350

A toy store had 654 toys. They sold 287 toys last week. How many toys are still in the store?

• 500

• 250

• 400

• 367

A farmer harvested 432 apples and then picked 215 more. How many apples does the farmer have now?

• 647

• 600

• 700

• 500

In a school, there are 789 students. If 145 students went on a field trip, how many students are still at school?

• 500

• 700

• 600

• 644

A zoo has 345 visitors in the morning and 267 visitors in the afternoon. Estimate how many visitors there were in total.

• 700

• 400

• 500

• 612

A car dealership had 456 cars. They sold 198 cars last month. How many cars are left in the dealership?

• 258

• 200

• 300

• 400

A concert had 678 tickets sold. If 123 tickets were refunded, how many tickets are still valid?

• 678

• 600

• 555

• 450

A library received 234 new books and donated 145 books. How many books does the library have now?

• 89

• 145

• 89

• 234

A gardener planted 512 flowers in spring and 289 flowers in summer. How many flowers did the gardener plant in total?

• 801

• 700

• 900

• 600