3-Digit Math Challenge

345 + 278?

• 567

• 612

• 623

• 543

Answer explanation

The correct answer is 623. When you add 345 and 278 together, you get 623.

Find the total when 456 and 189 are added together.

• 6451

• 400

• 560

• 645

Answer explanation

The correct total when 456 and 189 are added together is 645.

Subtract 213 from 587.

• 450

• 200

• 800

• 374

Answer explanation

To subtract 213 from 587, you get 374. Therefore, the correct answer is 374.

824 - 367.

• 457

• 641

• 239

• 586

Answer explanation

To find the difference, subtract 367 from 824 to get 457. Therefore, the correct answer is 457.

Sara had 548 marbles and she found 237 more. How many marbles does she have now?

• 785

• 675

• 462

• 823

Answer explanation

To find the total marbles, add 548 and 237, which equals 785. Therefore, Sara now has 785 marbles.

There were 789 books in the library. 345 books were borrowed. How many books are left in the library?

• 678

• 234

• 444

• 567

Answer explanation

To find the number of books left, subtract the number of borrowed books (345) from the total number of books (789). 789 - 345 = 444. Therefore, there are 444 books left in the library, so the correct answer is 444.

432 + 198.

• 530

• 620

• 720

• 630

Answer explanation

The correct answer is 630 because when you add 432 and 198, you get 630.

576 - 289?

• 400

• 200

• 365

• 287

Answer explanation

576 - 289 = 287. Therefore, the correct answer is 287.

A bakery sold 456 cupcakes in the morning and 189 cupcakes in the evening. How many cupcakes did they sell in total?

• 645

• 543

• 700

• 600

Answer explanation

The total number of cupcakes sold is 456 + 189 = 645. Therefore, the correct answer is 645.

If there were 824 students in the school and 367 students went on a field trip, how many students are left in the school?

• 457

• 532

• 276

• 689

Answer explanation

To find the number of students left, subtract the number of students on the field trip (367) from the total number of students (824). 824 - 367 = 457. Therefore, there are 457 students left in the school.