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Splash Screen. Are You Ready for Chapter 14? Lesson 1: Add Hundreds Lesson 2: Regroup Ones Lesson 3: Regroup Tens Lesson 4: Problem-Solving Strategy: Make a Table Lesson 5: Estimate Sums Lesson 6: Subtract Hundreds Lesson 7: Regroup Tens Lesson 8: Regroup Hundreds

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Presentation Transcript
chapter menu
Are You Ready for Chapter 14?
  • Lesson 1: Add Hundreds
  • Lesson 2: Regroup Ones
  • Lesson 3: Regroup Tens
  • Lesson 4: Problem-Solving Strategy: Make a Table
  • Lesson 5: Estimate Sums
  • Lesson 6: Subtract Hundreds
  • Lesson 7: Regroup Tens
  • Lesson 8: Regroup Hundreds
  • Lesson 9: Estimate Differences
  • Lesson 10: Problem-Solving Investigation: Choose a Strategy
  • Chapter 14 Review

Select a hyperlink to go to the corresponding slides.

Chapter Menu
lesson 1 teach

5

0

0

  • How can you solve 500 + 400?

4

0

0

Lesson 1—Teach
lesson 1 teach1

5

0

0

  • What addition fact can you use to solve this problem?

4

0

0

5 + 4 = 9

Lesson 1—Teach
lesson 1 teach2

5

0

0

  • What is500 + 400?

4

0

0

9

0

0

900

Lesson 1—Teach
lesson 1 check

Add.

300 + 200 = ___

500

500 + 100 = ___

600

700 + 200 = ___

900

400 + 400 = ___

800

Lesson 1—Check
lesson 2 teach2

1

  • Regroup. 10 ones is the same as 1 ten. Where do we write the 1?

6

1

1

3

1

9

above the numbers in the tens column

Lesson 2—Teach
lesson 2 teach3

1

  • What do we write in the ones place?

6

1

1

3

1

9

0

0

Lesson 2—Teach
lesson 2 teach4

1

  • Add the tens. What is 1 + 1 + 1?

6

1

1

3

1

9

3

0

3

Lesson 2—Teach
lesson 2 teach5

1

  • Add the hundreds. What is 6 + 3?

6

1

1

3

1

9

9

3

0

9

Lesson 2—Teach
lesson 2 teach6

1

  • What is 611 + 319?

6

1

1

3

1

9

9

3

0

930

Lesson 2—Teach
lesson 2 check
Add.

518

+ 239

268

+ 316

732

+ 129

861

757

584

Lesson 2—Check
lesson 3 teach2

1

  • How do we regroup 17?

3

9

9

1

4

8

7

1 ten and 7 ones

Lesson 3—Teach
lesson 3 teach3

1

  • Add the tens. What is1 + 9 + 4?

3

9

9

1

4

8

7

14

Lesson 3—Teach
lesson 3 teach4

1

1

  • How do we regroup 14 tens?

3

9

9

1

4

8

4

7

1 hundred and 4 tens

Lesson 3—Teach
lesson 3 teach5

1

1

  • Add the hundreds. What is 1 + 3 + 1?

3

9

9

1

4

8

4

5

7

5

Lesson 3—Teach
lesson 3 teach6

1

1

  • What is399 + 148?

3

9

9

1

4

8

4

5

7

547

Lesson 3—Teach
lesson 3 check
Add.

482

+ 255

284

+ 243

182

+ 226

408

737

527

Lesson 3—Check
lesson 4 teach1

What do I know?

Underline what you know.

Lesson 4—Teach
lesson 4 teach3

How will I solve the problem?

I will make a table to find the time that Sonja will leave.

Lesson 4—Teach
lesson 4 teach4

2

4:30

3

6:30

Make a table.

Sonja’s plane will leave at 6:30.

Lesson 4—Teach
lesson 4 teach5

Look back.Is my answer reasonable?

Flight 1 leaves at 2:30.

Flight 2 leaves at 4:30.

Flight 3 leaves at 6:30.

yes

Lesson 4—Teach
lesson 4 check
Make a table to solve.
  • Conner read 1 book every week for 6 weeks. Each book had 100 pages. How many pages did he read in all?

600 pages

Lesson 4—Check
lesson 5 teach

678 + 118

  • What is 678 rounded to the nearest ten?

680

Lesson 5—Teach
lesson 5 teach1

678 + 118

  • What is 118 rounded to the nearest ten?

120

Lesson 5—Teach
lesson 5 teach2

678 + 118

  • What is the estimated sum of 678 + 118 to the nearest ten?

680 + 120 = 800

Lesson 5—Teach
lesson 5 teach3

678 + 118

  • What is 678 rounded to the nearest hundred?

700

Lesson 5—Teach
lesson 5 teach4

678 + 118

  • What is 118 rounded to the nearest hundred?

100

Lesson 5—Teach
lesson 5 teach5

678 + 118

  • What is the estimated sum of678 + 118 to the nearest hundred?

700 + 100 = 800

Lesson 5—Teach
lesson 5 check

404 + 161

  • What is 404 rounded to the nearest ten?

400

Lesson 5—Check
lesson 5 check1

404 + 161

  • What is 161 rounded to the nearest ten?

160

Lesson 5—Check
lesson 5 check2

404 + 161

  • What is the estimated sum of404 + 161 to the nearest ten?

400 + 160 = 560

Lesson 5—Check
lesson 5 check3

404 + 161

  • What is 404 rounded to the nearest hundred?

400

Lesson 5—Check
lesson 5 check4

404 + 161

  • What is 161 rounded to the nearest hundred?

200

Lesson 5—Check
lesson 5 check5

404 + 161

  • What is the estimated sum of404 + 161 to the nearest hundred?

400 + 200 = 600

Lesson 5—Check
lesson 5 check6

404 + 161

  • Which estimate is closer to the exact answer?

rounding to the tens

Lesson 5—Check
lesson 6 teach

  • Subtract the ones. What is 0 – 0?

6

0

0

3

0

0

0

0

Lesson 6—Teach
lesson 6 teach1

  • Subtract the tens. What is 0 – 0?

6

0

0

3

0

0

0

0

0

Lesson 6—Teach
lesson 6 teach2

  • Subtract the hundreds. What is 6 – 3?

6

0

0

3

0

0

3

0

0

3

Lesson 6—Teach
lesson 6 teach3

  • When subtracting hundreds, you can ignore the zeros. All that is left is a one-digit number fact which has two zeros after it.

6

0

0

3

0

0

3

0

0

Lesson 6—Teach
lesson 6 teach4

  • 6 hundreds– 3 hundreds3 hundreds

6

0

0

3

0

0

600– 300300

3

0

0

Lesson 6—Teach
lesson 6 check
Subtract.

500

– 200

400

– 300

700

– 100

600

300

100

Lesson 6—Check
lesson 7 teach

  • How do you solve 286 – 179?

2

8

6

1

7

9

Lesson 7—Teach
lesson 7 teach1

Try to subtract the ones. Can you subtract 9 from 6?

2

8

6

1

7

9

no

Lesson 7—Teach
lesson 7 teach2

Regroup the tens. Change one of the tens into ten ones. How many tens does that leave you?

7

2

8

6

1

7

9

8 – 1 = 7

Lesson 7—Teach
lesson 7 teach3

How many ones does that give you?

16

7

2

8

6

1

7

9

6 + 10 = 16

Lesson 7—Teach
lesson 7 teach4

Now subtract the ones. What is 16 – 9?

16

7

2

8

6

1

7

9

7

7

Lesson 7—Teach
lesson 7 teach5

Subtract the tens. What is 7 – 7?

16

7

2

8

6

1

7

9

0

7

0

Lesson 7—Teach
lesson 7 teach6

Subtract the hundreds. What is 2 – 1?

16

7

2

8

6

1

7

9

1

0

7

1

Lesson 7—Teach
lesson 7 teach7

What is286 – 179?

16

7

2

8

6

1

7

9

1

0

7

107

Lesson 7—Teach
lesson 7 check
Subtract.

998

– 389

753

– 119

873

– 14

859

609

634

Lesson 7—Check
lesson 8 teach

  • How do you solve 534 – 152?

5

3

4

1

5

2

Lesson 8—Teach
lesson 8 teach1

  • Subtract the ones. What is 4 – 2?

5

3

4

1

5

2

2

2

Lesson 8—Teach
lesson 8 teach2

  • Try to subtract the tens. Can you subtract 5 from 3?

5

3

4

1

5

2

2

no

Lesson 8—Teach
lesson 8 teach3

  • Regroup the hundreds. Change one of the hundreds into 10 tens. How many hundreds does that leave you?

4

5

3

4

1

5

2

2

5 – 1 = 4

Lesson 8—Teach
lesson 8 teach4

  • How many tens does that give you?

13

4

5

3

4

1

5

2

2

3 + 10 = 13

Lesson 8—Teach
lesson 8 teach5

  • Now subtract the tens. What is 13 – 5?

13

4

5

3

4

1

5

2

8

2

8

Lesson 8—Teach
lesson 8 teach6

  • Subtract the hundreds. What is 4 – 1?

13

4

5

3

4

1

5

2

3

8

2

3

Lesson 8—Teach
lesson 8 teach7

  • What is534 – 152?

13

4

5

3

4

1

5

2

3

8

2

382

Lesson 8—Teach
lesson 8 check
Subtract.

277

– 194

537

– 356

518

– 65

453

83

181

Lesson 8—Check
lesson 9 teach

434 – 196

  • What is 434 rounded to the nearest hundred?

400

Lesson 9—Teach
lesson 9 teach1

434 – 196

  • What is 196 rounded to the nearest hundred?

200

Lesson 9—Teach
lesson 9 teach2

434 – 196

  • What is the difference between 400 and 200?

400 – 200 = 200

Lesson 9—Teach
lesson 9 teach3

434 – 196

  • 434 – 196 is about 200. You have rounded numbers to the hundreds to estimate the solution to the problem.
Lesson 9—Teach
lesson 9 teach4

434 – 196

  • What is 434 rounded to the nearest ten?

430

Lesson 9—Teach
lesson 9 teach5

434 – 196

  • What is 196 rounded to the nearest ten?

200

Lesson 9—Teach
lesson 9 teach6

434 – 196

  • What is the difference between 430 and 200?

430 – 200 = 230

Lesson 9—Teach
lesson 9 teach7

434 – 196

  • 434 – 196 is about 230. You have rounded numbers to the tens to estimate the solution to the problem.
Lesson 9—Teach
lesson 9 check

598 – 294

  • What is 598 rounded to the nearest hundred?

600

Lesson 9—Check
lesson 9 check1

598 – 294

  • What is 294 rounded to the nearest hundred?

300

Lesson 9—Check
lesson 9 check2

598 – 294

  • What is the difference between 600 and 300?

600 – 300 = 300

Lesson 9—Check
lesson 9 check3

598 – 294

  • What is 598 rounded to the nearest ten?

600

Lesson 9—Check
lesson 9 check4

598 – 294

  • What is 294 rounded to the nearest ten?

290

Lesson 9—Check
lesson 9 check5

598 – 294

  • What is the difference between 600 and 290?

600 – 290 = 310

Lesson 9—Check
lesson 9 check6

598 – 294

  • Which estimate is closer to the exact answer?

rounding to the hundreds

Lesson 9—Check
lesson 10 teach
What do I know?
  • Underline what you know.
Lesson 10—Teach
lesson 10 teach4
One way is to work backward.

I have 300 cubes left.

I gave 100 cubes to Rikki.

I gave 200 cubes to Polly.

300 + 100 + 200 = 600

300

+ 100

+ 200

600

I started with 600 cubes.

Lesson 10—Teach
lesson 10 teach5
Is my answerreasonable?
  • 600 – 200 = 400I gave Polly 200 cubes.
  • 400 – 100 = 300I gave Rikki 100 cubes.

The answer is correct.

Lesson 10—Teach
lesson 10 check
Choose a strategy. Solve.
  • I am a number less than 150. There is a 7 in my ones place. I am greater than 140. What number am I?

147

Lesson 10—Check
chapter review 1

Complete the sentences.

regroup

To ____________ is to take apart a number and write it a new way.

To ____________ is to change the value of a number into one that is easier to work with.

round

regroup

round

Chapter Review 1
chapter review 2
Solve.

438

– 165

263

– 116

542

+ 239

781

273

147

Chapter Review 2
chapter resources

Image Bank

Math Tools

Regroup Ones

Regroup Tens

Regroup Hundreds

Chapter Resources