1. Add and Subtract Decimals
Chapter 3
Add and Subtract Decimals

2. An ordered list of numbers Term Each of the numbers in a sequence
Benchmark
A familiar number used as a point of reference
Estimate
To find a number that is close to an exact amount
Round
To replace a number with one that is simpler and is approximately the same size as the original number
Hundredth
One of one hundred equal parts
Tenth
One of ten equal parts
Thousandth
One of one thousand equal parts

3. Show Animated math Module for lesson 3-1

4. Standard Form
Word
Form
Expanded

5. Then complete:
Show What you Know
Vocabulary Builder

6. Lesson 3-1: Thousandths
Date

7. Do after p. 105

10. Test Prep Lesson 3-1:
Use your clicker to answer the following question:

11. Lesson 3-2: Place Value of Decimals
Date

13. Test Prep Lesson 3-2:
Use your clicker to answer the following question:

14. Lesson 3-3: Compare and Order Decimals
Date

15. Watch animated math module
3 Ways to Compare and Order Decimals
Use decimal model (draw a picture)
Use a number line
3. Use place value (line decimals up vertically)

16. Test Prep Lesson 3-3:
Use your clicker to answer the following question:

17. Lesson 3-4: Round Decimals
Date

18. Rounding Rules Unerline the digit in the place you want to round
Step 1
If the digit to the right of the underlined number is:
less than 5 keep the underlined number the same
greater than 5 round the underlined number up
Step 2
5 or more raise the score
4 or less let it rest
Drop the digits to the right of the underlined number
Step 3

19. Round 0 . 437 to nearest hunderedth
Round to nearest tenth
Round to nearest whole number
Round to nearest hunderedth
Round to nearest whole number

20. Round 4.6821 to the nearest: Whole Number (One) Tenths Hunderedths Thousandths

21. Test Prep Lesson 3-4:
Use your clicker to answer the following question:

22. Lesson 3-5: Decimal Addition
Date

23. Draw a quick picture to add decimals

24. Add = _____

25. Add = _____

26. Test Prep Clicker Question Lesson 3-5:

27. Date
Lesson 3-6: Decimal Subtraction
with Base Ten Blocks

28. 0.84 – 0.56=

29. 2.82 – =

30. 3.17 – 0.2 =

31. Test Prep Clicker Question Lesson 3-6:

32. Date
Lesson 3-7: Estimate Decimal Sum and Differences

33. 8.78 1.24 _ 0.30 0.82 + 3.4 Estimate using Rounding Benchmarks 1 0.25
5 or more raise the score
4 or less let it rest
0.25
0.75
0.50 1
8.78
_ 0.30
1.24
0.82
+ 3.4

34. Rounding vs. Benchmark
2.08
0.56
6.17
_ 3.5
3.28
_ 0.86

35. Test Prep Lesson 3-7:
Use your clicker to answer the following question:

36. Lesson 3-8: Add Decimals
Date

37. Step 1: Estimate
Step 2: Vertically line up the place values
Step 3: Add =

38. Test Prep Lesson 3-8:
Use your clicker to answer the following question:

39. Lesson 3-9: Subtract Decimals
Date

40. Step 1: Estimate
Step 2: Vertically line up the place values
Step 3: Subtract
13.2 – 8.04 =
5.2 – 3.6 =

41. Test Prep Lesson 3-9:
Use your clicker to answer the following question:

42. Lesson 3-10: Patterns with Decimals
Date

43. Step 1: Look for a pattern is the sequence
increasing or decreasing
Step 2: Write a rule that describes the sequence
Step 3: Extend the sequence to solve the problem
6.70, 5.60, 4.50, _____, 2.30, 1.20 Rule:
2.3, , , , __, __ Rule:

44. Test Prep Clicker Question Lesson 3-10:

45. Lesson 3-11: Add and Subtract Money
Date

47. Test Prep Lesson 3-11:
Use your clicker to answer the following question:

48. Lesson 3-12: Choose a Method
Date

49. N – 1.15 = 1.10
N = 1.91
N = 31.88

50. Test Prep Lesson 3-12:
Use your clicker to answer the following question: