Addition and Subtraction: Master Number Operations for Year 3 Maths

Question 1

A farmer has 245 sheep. He buys 138 more. How many sheep does he have now?

Accepted Answer

383

Answer

107

Answer

400

Answer

227

Question 2

Calculate the total of 345 and 278, then subtract 192 from the result.

Accepted Answer

521

Answer

431

Answer

631

Answer

721

Question 3

A farmer wants to grow his herd. He buys 234 cows and 345 sheep. How many animals did the farmer buy in total?

Accepted Answer

569

Answer

596

Answer

479

Answer

679

Question 4

Let's estimate the sum of 456 and 234. Explain your reasoning and how close your estimate is to the actual answer.

Accepted Answer

Around 500. I rounded both numbers to the nearest hundred.

Answer

About 700. The hundreds and tens digits in both numbers add up to 7.

Answer

Around 200. The tens digits add up to 20.

Answer

I'm not sure.

Question 5

Which number sentence shows how to find the difference between seven hundred eighty-nine and three hundred forty-five?

Accepted Answer

Seven hundred eighty-nine minus three hundred forty-five

Answer

Three hundred forty-five minus seven hundred eighty-nine

Answer

Seven hundred eighty-nine plus three hundred forty-five

Answer

Three hundred forty-five plus seven hundred eighty-nine

Question 6

Which of the following is NOT a way to add numbers?

Accepted Answer

Taking away

Answer

Counting on

Answer

Using a number line

Answer

Column addition

Question 7

Which of these numbers is the smallest?

Accepted Answer

Two hundred fifty-six

Answer

Three hundred forty-five

Answer

Four hundred thirty-two

Answer

Five hundred twenty-one

Question 8

To complete the number sentence 456 + ___ = 678, what number should be in the blank?

Accepted Answer

222

Answer

122

Answer

322

Answer

422

Question 9

A shop had 432 apples. They received 156 more apples. How many apples do they have now?

Accepted Answer

588

Answer

276

Answer

376

Answer

576

Question 10

What is 345 plus 256?

Accepted Answer

591

Answer

601

Answer

611

Answer

621

Question 11

Which number is the greatest?

Accepted Answer

456

Answer

379

Answer

289

Answer

199

Question 12

Subtract 123 from 456 using a number line.

Accepted Answer

Start at 456, move 100 to the left, then 20 to the left, and finally 3 to the left.

Answer

Start at 456, move 100 to the left, then 20 to the right, and finally 3 to the left.

Answer

Start at 123, move 100 to the right, then 20 to the right, and finally 3 to the right.

Answer

Start at 123, move 100 to the left, then 20 to the right, and finally 3 to the left.

Question 13

Find the sum of 345 and 278.

Accepted Answer

623

Answer

523

Answer

723

Answer

823

Question 14

What is the missing number in the sequence: 234, 244, 254, ___, 274?

Accepted Answer

264

Answer

259

Answer

269

Answer

279

Question 15

Adding 245 and 367 equals:

Accepted Answer

612

Answer

522

Answer

600

Answer

592

Question 16

If you have 472 coins and you lose 153 coins, how many coins do you have left?

Accepted Answer

319

Answer

329

Answer

299

Answer

309

Question 17

A school has 598 students. If 245 students go on a field trip, how many students are left at school?

Accepted Answer

443

Answer

343

Answer

353

Answer

453

Question 18

A library has 345 books on its shelves. The librarian takes away 123 books to fix them. How many books are left on the shelves?

Accepted Answer

222

Answer

122

Answer

345

Answer

468

Question 19

When adding 254 and 167 using the expanded form method, what's the first step?

Accepted Answer

Break down 254 into 200 + 50 + 4

Answer

Add the hundreds, then the tens, and finally the ones

Answer

Guess the answer to be around 400

Answer

Add the digits without considering their place value

Question 20

A farmer has 456 sheep. He buys 278 more. How many sheep does he have now?

Accepted Answer

634

Answer

624

Answer

724

Answer

734

Question 21

Which of the following is the best strategy for finding the sum of 234 and 567?

Accepted Answer

Column addition

Answer

Number line

Answer

Counting on

Answer

Rounding to the nearest tens

Question 22

What is the opposite operation of addition?

Accepted Answer

Subtraction

Answer

Multiplication

Answer

Division

Answer

Algebra

Question 23

To add 234 and 567, which of these makes it easier? Use the commutative property of addition.

Accepted Answer

Change the order of the numbers you add.

Answer

Add the hundreds, then the tens, then the ones.

Answer

Skip count to find the answer.

Question 24

To find the sum of 245 and 367, what should we do?

Accepted Answer

Add the numbers vertically, aligning the digits in each place value.

Answer

Subtract the smaller number from the larger number.

Answer

Multiply the numbers together.

Answer

Divide the larger number by the smaller number.

Question 25

When subtracting 189 from 456, which method can we use?

Accepted Answer

Column subtraction, where we start from the ones place and work our way up.

Answer

Adding 189 to 456.

Answer

Dividing 456 by 189.

Answer

Multiplying 189 by 456.

Question 26

To add 345 and 278 mentally, what strategy can you use?

Accepted Answer

Round each number to the nearest ten and then add the rounded numbers mentally.

Answer

Multiply the numbers together.

Answer

Subtract the smaller number from the larger number.

Answer

Divide the larger number by the smaller number.

Question 27

When subtracting 456 by 123 mentally, which method is easiest?

Accepted Answer

Subtract the tens and ones separately and then combine the results.

Answer

Dividing 456 by 123.

Answer

Multiplying 456 by 123.

Answer

Adding 123 to 456.

Question 28

What is the expanded form of the number 678?

Accepted Answer

600 + 70 + 8

Answer

60 + 70 + 80

Answer

6 + 7 + 8

Answer

600 + 7 + 80

Question 29

Which number is the largest: 845, 458, or 548?

Accepted Answer

845

Answer

548

Answer

458

Question 30

Which of the following equations is correct?

Accepted Answer

456 + 279 = 735

Answer

456 - 279 = 177

Answer

279 - 456 = 177

Answer

279 - 456 = 735

Question 31

A school has 425 students in Year 3 and 367 students in Year 4. How many students are there in total?

Accepted Answer

792

Answer

692

Answer

892

Question 32

Put these numbers in order from smallest to biggest: 234, 156, 321, 456

Accepted Answer

156, 234, 321, 456

Answer

456, 321, 234, 156

Answer

321, 156, 234, 456

Answer

234, 156, 456, 321

Question 33

A library has 678 books. The librarian adds 245 more books. How many books are there now?

Accepted Answer

923

Answer

823

Answer

913

Answer

933

Question 34

Which number sentence shows:  A baker has 123 cookies and makes 45 more. How many does she have now?

Accepted Answer

123 + 45 = ?

Answer

45 + 123 = ?

Answer

45 - 123 = ?

Answer

123 - 45 = ?

Question 35

Which number is bigger than 400 but smaller than 500?

Accepted Answer

472

Answer

372

Answer

572

Answer

272

Question 36

Which is NOT a way to solve addition and subtraction problems?

Accepted Answer

Division

Answer

Using a number line

Answer

Counting on your fingers

Answer

Counting in your head

Question 37

A fruit vendor sold 274 apples on Monday and 158 apples on Tuesday. How many apples did they sell in total?

Accepted Answer

432

Answer

532

Answer

632

Answer

332

Question 38

A library has 467 books on its shelves. If 192 books are removed, how many books will remain?

Accepted Answer

275

Answer

175

Answer

475

Answer

375

Question 39

A farmer has 234 cows in his herd. If he sells 87 cows, how many cows will he have left?

Accepted Answer

147

Answer

237

Answer

137

Question 40

A baker made 237 chocolate chip cookies and 184 peanut butter cookies. How many cookies did the baker make in total?

Accepted Answer

421

Answer

311

Answer

411

Answer

321

Question 41

There are 589 students in a school. If 264 of them are girls, how many are boys?

Accepted Answer

325

Answer

335

Answer

315

Answer

853

Question 42

Find the result of 345 + 427.

Accepted Answer

772

Answer

672

Answer

662

Answer

762

Question 43

Calculate 823 - 576.

Accepted Answer

247

Answer

357

Answer

253

Answer

347

Question 44

A farmer had 648 apples and sold 299 apples. How many apples does he have left?

Accepted Answer

349

Answer

351

Answer

449

Answer

947

Question 45

What number is 100 more than 435?

Accepted Answer

535

Answer

635

Answer

445

Answer

335

Question 46

Which addition sentence can help you solve 12 - 5?

Accepted Answer

5 + ? = 12

Answer

12 - ? = 5

Answer

12 + 5 = ?

Answer

? + 12 = 5

Question 47

Emily has 245 stickers. Her friend gives her 137 more stickers. About how many stickers does Emily have now?

Accepted Answer

380

Answer

200

Answer

400

Answer

300

Question 48

A shop had 600 books. They sold 237 books. About how many books are left in the shop?

Accepted Answer

400

Answer

100

Answer

800

Answer

200

Question 49

Which sum tells you how much bigger 456 is than 234?

Accepted Answer

456 - 234

Answer

234 + 456

Answer

456 x 234

Answer

234 - 456

Question 50

Which one shows the correct way to solve 567 - 234 using column subtraction?

Accepted Answer

5   6   7
      - 2   3   4
      ________
      3   3   3

Answer

5   6   7
      - 2   3   4
      ________
      2   3   4

Answer

5   6   7
      + 2   3   4
      ________
      7   9   1

Question 51

Which sum has the same answer as 345 + 234?

Accepted Answer

234 + 345

Answer

345 x 234

Answer

234 - 345

Answer

345 - 234

Question 52

A shop sold 245 apples on Monday and 318 apples on Tuesday. How many apples did the shop sell altogether?

Accepted Answer

563

Answer

663

Answer

463

Answer

553

Question 53

What is the difference between 732 and 458?

Accepted Answer

274

Answer

324

Answer

224

Answer

374

Question 54

A farmer has 578 sheep. He sells 235 sheep. How many sheep are left?

Accepted Answer

343

Answer

333

Answer

243

Answer

443

Question 55

Which number is the sum of 345 and 217?

Accepted Answer

562

Answer

662

Answer

462

Answer

552

Question 56

A baker made 125 cookies in the morning and 187 cookies in the afternoon. How many cookies did he make altogether?

Accepted Answer

312

Answer

302

Answer

212

Answer

412

Question 57

What number must be added to 234 to get 500?

Accepted Answer

266

Answer

276

Answer

366

Question 58

There are 648 children in a school. 315 of them are girls. How many boys are there?

Accepted Answer

333

Answer

433

Answer

233

Answer

323

Question 59

What is the difference between 900 and 365?

Accepted Answer

535

Answer

435

Answer

635

Answer

525

Question 60

A train travels 427 kilometers on Monday and 298 kilometers on Tuesday. How many kilometers did the train travel in total?

Accepted Answer

725

Answer

825

Answer

625

Question 61

Sarah has 876 stickers. She gives 452 stickers to her friend. How many stickers does Sarah have left?

Accepted Answer

424

Answer

414

Answer

324

Answer

524

Question 62

Calculate 245 + 378.

Accepted Answer

623

Answer

723

Answer

523

Answer

423

Question 63

Subtract 127 from 569.

Accepted Answer

442

Answer

542

Answer

342

Answer

242

Question 64

Find the sum of 345 and 287.

Accepted Answer

632

Answer

732

Answer

432

Answer

532