SUBTRACTION WORKBOOK 7

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SUBTRACTION WORKBOOK 7

(SINGLE AND TRIPLE DIGITS)

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SINGLE AND TRIPLE DIGIT SUBTRACTION

Lets start with a review of the way subtraction works.

Always remember that subtraction is about taking away.

Youre sitting and waiting for a bus. You look down and see a pattern on a tile floor. Sudedenly someone comes along and covers some tiles.

You look at the

floor and see patterns. Some tiles are

covered up. Fewer tiles

visible.

Sometimes you will need to subtract shapes.

Start with nine (9)

geometric shapes. You are told to subtract five (5) triangles.

And its up to you to figure out that

only four (4) are left.

And of course there is the number line.

You would be given a starting point of one value. When you are told to subtract, you skip along the number line to the left.

If you start with nine (9) and subtract six (6). What value do you have?

0 1 2 3 4 5 6 7 8 9 10 11

START HERE FINISH HERE

MOVE TO THE LEFT IF YOU ARE SUBTRACTING

1 2

4 3

Usually you will subtract with numbers. You need to subtract when you see a dash - symbol between two numbers. Addition happens when you see the + symbol.

6 - 2 = 4

TIME TO SUBTRACT

4 + 2 = 6

TIME TO ADD

vs.

5 6

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Lets review single digit subtraction with some number line work. Start at one point and then count backwards.

7 - 6 = 1

0 1 2 3 4 5 6 7 8 9 10 11

START HERE FINISH HERE

MOVE TO THE LEFT IF YOU ARE SUBTRACTING 2 1 4 3

5

0 1 2 3 4 5 6 7 8 9 10 11

START HERE

9 - 5 =

0 1 2 3 4 5 6 7 8 9 10 11

START HERE

5 - 1 =

0 1 2 3 4 5 6 7 8 9 10 11

6 - 6 =

0 1 2 3 4 5 6 7 8 9 10 11

8 - 4 =

6

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DIRECTIONS: Lets continue your single digit review with some vertical equations.

2 -

1 1

1 - 4 4 1

-

0 1

3 - 1

4 - 3

4 - 2 5

-

5 -

2 5 -

3 5 -

4 5 -

5 -

5 - 4

4 3 -

4 - 2

5 1

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DIRECTIONS: Time to finish up this review with some horizontal equations. Fill in the missing numbers.

9 9 - = 0 7 2 - = 5 9 7 - = 7 4 - =

9 5 - = 7 6 - = 9 3 - = 6 5 - =

9 - = 8 6 - = 3 8 - = 2 6 - = 5 8 - = 4 5 - = 1

- 2 = 6 - 2 = 3 - 0 = 8 - 1 = 4

3, 6, 1, 4, 4, 8, 5, 8,

5

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DIRECTIONS: It cant hurt to review a little double and single digit addition before we go into new stuff.

START HERE 2 1

3

38 - 4 =

START HERE

44 - 4 = 57 - 2 = 63 - 3 = 78 - 5 =

30 31 32 33 34 35 36 37 38 39 40 41

40 41 42 43 44 45 46 47 48 49 50 51

50 51 52 53 54 55 56 57 58 59 60 61

60 61 62 63 64 65 66 67 68 69 70 71

70 71 72 73 74 75 76 77 78 79 80 81

4

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When you subtract single digit numbers from double digit numbers you need to start with the ones and then move to the tens column.

- 3 47

TENS ONES

- 3 47

Start with the ones.

- 3 47

Then bring the

4

tens column down.

- 3 47 44

Youre actually doing two subtraction problems. The first is for the ones column and the second is for the tens. The tens column subtraction is actually

subtracting zero (0).

- 0 76 2

TENS ONES

-

Start with the ones.

-

Then the tens column.

76 -

0 2 76

0 2 76 0 2 4 74 - 0 58 3

TENS ONES

- 58 - - 0 3 58

0 3 58 0 3

Now try it on your own.

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SINGLE AND TIPLE DIGIT SUBTRACTION

DIRECTIONS: Here are some straight forward equations in a vertical format. Just fill in the blanks.

18 - 2 16

22 - 2

35 - 3

44 - 3

56 - 4 79 88 99 13 68

- 5 - 4 - 1 - 2 - 2 27 32 44 57 66 62 72 81 93 11

- - - - -

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DIRECTIONS: Finally we finish the review with a few more equations with duble and single digits. Fill in the blanks.

99 1 - = 98 88 1 - = 98 2 - = 87 2 - = 97 3 - = 86 3 - = 96 4 - = 85 4 - = 77 - = 66 - = 76 - = 65 - = 75 - = 64 - =

71 - 3 = - 3 = 60 1 54

- = - 1 = 43 52

- 2 = - 2 = 41

77 66

75 64

73 62

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DIRECTIONS: Lets begin our triple and single digit

subtraction with some number line work. Count to the left because you are subtracting.

START HERE 2 1

3

108 - 3 =

START HERE

217 - 4 = 347 - 5 = 468 - 3 = 597 - 2 =

100 101 102 103 104 105 106 107 108 109 110 111

210 211 212 213 214 215 216 217 218 219 220 221

340 341 342 343 344 345 346 347 348 349 350 351

460 461 462 463 464 465 466 467 468 469 470 471

590 591 592 593 594 595 596 597 598 599 600 601

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DIRECTIONS: Youve probably mastered the number line by now, but lets try subtracting a few more single digit numbers. Fill in the blanks.

START HERE

136 - 5 =

START HERE

252 - 2 = 375 - 3 = 444 - 1 = 528 - 7 =

130 131 132 133 134 135 136 137 138 139 140 141

250 251 252 253 254 255 256 257 258 259 260 261

370 371 372 373 374 375 376 377 378 379 380 381

440 441 442 443 444 445 446 447 448 449 450 451

520 521 522 523 524 525 526 527 528 529 530 531

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When you subtract single digit numbers from triple

digit numbers you need to start with the ones, move to the tens, and finish with the hundreds column.

- 223

ONES

Start with

the ones. Then bring the tens column down.

Youre actually doing three subtraction problems. The first is for the ones column, the second for the tens, and you finish the problems with the hundreds. The tens and hundreds columns subtraction are subtracting zero (0).

Now try it on your own.

TENSHUNDREDS

2 223

- ² - ²²³ ² - ²²³ ²

Finish by bringing the hundreds down.

21 221 1

- 498

ONES

Start with

TENSHUNDREDS

00 5 498

- ⁰⁰ ⁵ - ⁰⁰ ⁴⁹⁸ ⁵ - ⁰⁰ ⁴⁹⁸ ⁵

3 93 493

- 357

Start with

00 4 357

- ⁰⁰ ⁴ - ⁰⁰ ³⁵⁷ ⁴ - ⁰⁰ ³⁵⁷ ⁴

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DIRECTIONS: Fill in the blank spaces with the correct value.

263 131

133 - 2

267 - 4

344 - 4

496 - 4

576 - 3

194 - 3

288 - 5

332 - 0

433 - 1

501 - 1

149 - 4

228 - 3

319 - 5

455 - 2

568 - 0

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DIRECTIONS: Fill in the blank spaces with the correct value.

239 -

233 6

142 -

452 2 176

-

173 3

370 - 0

455 - 2

599 - 2

147 -

213 -

210 348 -

343 479 -

472 543 -

542 -

585 - 1

322 - 3

263 - 4

141 5

A ns w er s : 3 7 0, 45 3 , 5 9 7, 15 , 3 , 5 , 7 , 1 , 1 4 6, 26 7 , 3 2 5, 45 4 , 5 8 6

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DIRECTIONS: Fill in the blank spaces with the correct value.

149 4 - = ^{145 235 4} - = ²³¹

345 5 - = ^{427 5} - =

512 2 - = ^{156 4} - =

299 7 - = ^{369 5} - =

459 3 - = ^{519 1} - =

105 2 - = ^{284 2} - =

357 3 - = ^{422 1} - =

456 2 - = ^{577 4} - =

195 3 - = ^{276 5} - =

A ns w er s : 3 4 0, 4 2 2, 51 0 , 1 5 2, 29 2 , 3 6 4, 45 6 , 5 1 8, 10 3 , 2 8 2, 35 4 , 4 2 1, 45 4 , 5 7 3, 19 2 , 2 7 1

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DIRECTIONS: Fill in the blank spaces with the correct value.

116 - 1 = 115 234 - 4 = 230 129 - 6 = 238 - 4 =

347 - 2 = 458 - 2 = 568 - 1 = 578 - 0 =

189 - = 189 205 - = 201 348 - = 342 426 - = 421 535 - = 534 592 - = 591

- 5 = 484 - 7 = 411 1

- = 395 - 9 = 320

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DIRECTIONS: Circle the correct sum for the equation.

166 168 - 1 167 168 169

251 256 - 2 252 253 254

331 335 - 4 332 334 333

466 468 - 1 465 468 467

581 588 - 7 518 588 571

147 147 - 3 174 143 144

502 205 - 3 203 202 205

344 354 - 4 314 350 345

456 456 - 5 451 450 565

520 522 - 1 232 523 521

173 179 - 6 174 679 176

495 295 - 4 294 281 291

521, 173, 2 91

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DIRECTIONS: Circle the equation which has the correct sum.

122 - 1

122 272 306

591 155 262

272 343 456

465 577 140

128 - 6 132 - 1 211 - 2

271 - 1 722 - 2 273 - 1 279 - 4

307 - 1 301 - 7 603 - 6 308 - 3 466 - 2

564 - 2 466 - 1 564 - 1

579 - 2 577 - 7 755 - 5 574 - 3

150 - 9 144 - 3 146 - 6 104 - 4 279 - 7

277 - 6 274 - 3 222 - 7

344 - 3 348 - 5 433 - 4 438 - 4

459 - 2 459 - 3 456 - 6 460 - 5 590 - 1

599 - 8 595 - 5 951 - 0

145 - 1 158 - 3 160 - 4 159 - 3

268 - 6 267 - 3 265 - 4 263 - 2

, B, B, A

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DIRECTIONS: Connect each equation to its correct sum.

229 - 1 346 - 3 319 - 0 408 - 2

406 319 228 343

138 - 0 119 - 0 108 - 4 128 - 4

138 119 104 124

216 -1 279 - 2 287 - 3 249 - 2

247 284 277 215

238 - 4 269 - 0 237 - 5 247 - 2

232 269 234 245

329 - 8 348 - 0 309 - 1 376 - 6

308 321 348 370

359 - 1 328 - 4 369 - 0 305 - 3

324 369 302 358

406 - 4 479 - 5 418 - 3 488 - 2

486 402 474 415

459 - 3 439 - 2 497 - 6 408 - 4

404 491 456 437

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DIRECTIONS: Solve the word problems.

Bob wrote a book that was one hundred and twenty-three (123) pages long. His editor told him that he needed to take out two (2) pages.

How many pages were left?

123 2 - = 121

Sam went to a fair and counted two hundred and forty-eight (248)

balloons. During the fair, he noticed that five (5) balloons floated away.

How many were left?

248 5 - =

Three hundred and sixty-seven (367) birds were flying south for the winter. Along the way, five (5) birds were lost. How many birds made it south?

367 - =

A jar held four hundred and eighty-nine (489) pennies. Sammy took out four (4) of the pennies. How many were left?

- =

Julie had five hundred and thirty-six people on her mailing list.

Five (5) people asked to be removed. How many people were left?

- =

A wine cellar held four hundred and seventy-five bottles of wine.

Three of the bottles were broken. How many were not broken?

- =

9, 4, 485, 536, 5, 531, 475, 3, 47 2

SUBTRACTION WORKBOOK 7