Estimating Differences: Fun with 3-Digit Subtraction!

A bakery made 425 cookies in the morning. If they sold 198 cookies by noon, how many cookies are left? Estimate the difference before subtracting.

• 250

• 227

• 200

• 300

A library had 732 books. After donating 145 books, how many books does the library have now? Check your subtraction by estimating first.

• 650

• 587

• 500

• 600

A toy store had 512 toys. They received a shipment of 278 new toys. How many toys do they have now? Estimate the total before calculating.

• 780

• 790

• 800

• 750

In a school, there were 645 students enrolled. If 289 students transferred to another school, how many students remain? Estimate the difference to check your answer.

• 500

• 356

• 300

• 400

A farmer harvested 823 apples. He sold 456 apples at the market. How many apples does he have left? Estimate the difference to verify your answer.

• 300

• 367

• 500

• 400

A zoo had 910 visitors last week. If 367 visitors came this week, how many visitors did the zoo have in total? Estimate first to check your work.

• 1277

• 1300

• 900

• 1270

A factory produced 678 toys in January and 245 toys in February. How many toys were produced in total? Estimate the total before calculating the exact number.

• 800

• 950

• 923

• 600

A school had 540 pencils. If 215 pencils were given to students, how many pencils are left? Estimate the difference to ensure accuracy.

• 325

• 400

• 300

• 215

A bookstore had 1,025 books. If they sold 389 books, how many books are still in the store? Check your subtraction by estimating first.

• 700

• 800

• 636

• 500

A concert had 1,200 tickets available. If 478 tickets were sold, how many tickets are left? Estimate the difference to confirm your answer.

• 800

• 500

• 722

• 600