1 / 34

Topic C P lace value and rounding decimal fractions

Topic C P lace value and rounding decimal fractions. STANDARD - 5.NBT.4. Grade 5 Module 1 Lesson 7. Objective: R ound a given decimal to any place 
value place value understanding and 
the vertical number line. MATERIALS NEEDED FOR THIS LESSON. Student. Student Pages.

lenore-hicks
Télécharger la présentation

Topic C P lace value and rounding decimal fractions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Topic C Place value and rounding decimal fractions STANDARD - 5.NBT.4

  2. Grade 5 Module 1 Lesson 7 Objective: Round a given decimal to any place 
value place value understanding and 
the vertical number line.

  3. MATERIALS NEEDED FOR THIS LESSON Student Student Pages Place Value Chart Personal White Boards Sprint A & B Problem Set Exit Ticket Homework Teacher Teacher Pages

  4. Fluency Practice(12 minutes)

  5. Find the Midpoint 7 minutes 5.NBT.4 SPRINT A 1 minutes Do as many problems as you can. Do your personal best. Take your mark! Get set! THINK!

  6. Find the Midpoint 5.NBT.4 SPRINT B 1 minutes Do as many problems as you can. Do your personal best. Take your mark! Get set! THINK!

  7. Compare Decimal Fractions 2 minutes 5.NBT.3b 12.57 12.75 67 100 0.67 83 100 0.084

  8. 328.2 328.099 4.07 forty-seven tenths twenty-four and 9 thousandths 3 tens

  9. Rename the Units 3 minutes 5.NBT.2 1.5 = ____ tenths 2.5 = ____ tenths 12.5 = ____ tenths 17.5 = ____ tenths

  10. 27.5 = ____ tenths 24.5 = ____ tenths 24.3 = ____ tenths 42.3 = ____ tenths

  11. Application Problem (8 minutes) Craig, Randy, Charlie, and Sam ran in a 5k race 
on Saturday. They were the top 4 finishers. Here 
are their race times: Craig: 25.9 minutes Randy: 32.2 minutes Charlie: 32.28 minutes Sam: 25.85 minutes Who won first place? Who won second place? 
Third? Fourth?

  12. Concept Development (30 minutes)

  13. Problem 1 Strategically decompose a whole number using multiple units to 
round to the nearest ten and nearest hundred decompose 155

  14. round 155 to the nearest tens? 16 tens = 160 15 tens + 7 ones 15 ten + 5 ones = 155 15 tens = 150

  15. round 155 to the nearest hundreds? 2 hundreds = 200 155 1 hundred + 5 tens = 150 1 hundred = 100

  16. Problem 2 Strategically decompose a decimal number to round to the 
nearest whole and nearest tenth. decompose 1.57

  17. Round 1.57 to the nearest tenth 16 tenths = 1.60 15 tenths + 7 hundredths = 1.57 15 tenths + 5 hundredths = 1.55 15 tenths = 1.50

  18. Problem 3 Strategically decompose a decimal number to round to the 
nearest ten, one, tenth, and hundredth decompose 4.381

  19. 1 ten = 10 Round to the nearest tens 5 ones = 5 4 ones +381 0 tens = 0

  20. Round to the nearest ones 5 ones = 5 4 ones + 5 tenths = 4.5 4 ones +381 4 ones = 4

  21. 44 tenths = 4.4 Round to the nearest tenths 43 tenths + 81 thousandths 43 tenths + 5 hundredths 43 tenths = 4.3

  22. 439 hundredths = 4.39 Round to the nearest hundredths 438 hundredths + 5 thousandths 438 + 1 thousandths 438 hundredths = 4.38

  23. Problem 4 Strategically decompose to round a number to the nearest one, 
tenth, and hundredth

  24. Round to the nearest one 10 ones = 10 9.975 9.5 9 ones = 9

  25. Round to the nearest tenth 100 tenths = 10 9.975 9.95 99 tenths = 9.9

  26. thousandths tens tenths hundredths ones 9 9 9 9 7 99.799 99 7 9 9 9 997 9 9979 9 99799 Round to the nearest tens 998 hundredths = 9.98 9.975 997 hundredths = 9.97

  27. 99.799 thousandths tens tenths hundredths ones 9 9 9 9 7 99 7 9 9 Round to the nearest tens 9 997 9 9979 9 99799 10 tens = 100 99.799 95 9 tens = 90

  28. 99.799 thousandths tens tenths hundredths ones 9 9 9 9 7 99 7 9 9 Round to the nearest ones 9 997 9 9979 9 99799 100 ones = 100 99.799 99.5 99 ones = 99

  29. 99.799 thousandths tens tenths hundredths ones 9 9 9 9 7 99 7 9 9 Round to the nearest tenth 9 997 9 9979 9 99799 998 tenths = 99.8 99.799 99.75 997 tenths = 99.7

  30. 99.799 thousandths tens tenths hundredths ones 9 9 9 9 7 99 7 9 9 Round to the nearest hundredths 9 997 9 9979 9 99799 9980 hundredths = 99.80 99.799 99.795 9979 hundredths = 99.79

  31. Problem Set (10 minutes) Do Your Personal Best (Complete independently!)

  32. Student Debrief (10 minutes) In #2 which decomposition helps you most if you 
want to round to the hundredths place? The tens 
place? Ones place? Why? How was #1 different from both #2 and #3?

  33. EXIT TICKET (3 minutes) Complete the exit ticket and turn in...

  34. HOMEWORK

More Related