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Chapter 1

Chapter 1. Lesson 1-1. Objective/ I can…. I can… understand whole numbers Homework: Worksheet 1-1. New Vocabulary. Standard form: number form (ex: 1,234) < “less than” = “equal” > “greater than”. Examples and Notes. Place Value: 15 138 1,862, 394. Examples and Notes.

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Chapter 1

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  1. Chapter 1

  2. Lesson 1-1

  3. Objective/ I can… • I can… understand whole numbers • Homework: Worksheet 1-1

  4. New Vocabulary • Standard form: number form (ex: 1,234) • < “less than” • = “equal” • > “greater than”

  5. Examples and Notes Place Value: 15 138 1,862, 394

  6. Examples and Notes • Compare: • 8,215 ______ 8,125 • 8,801 ______ 810 ______ 801 • 29,286_____ 29,826 ______ 29,628

  7. Examples and Notes • Write in words: • 1,256- • One thousand, two hundred, fifty six. • No “AND”! • 1,001,001 • One million, one thousand, one

  8. Lesson 1-2

  9. Objective/ I can… • I can… Estimate with whole numbers • Homework: Worksheet 1-2 and puzzle 1-2

  10. New Vocabulary • Compatible numbers: • Numbers that are easy to compute mentally

  11. Examples and Notes • Estimate by rounding (nearest 10 or 100): • 37 + 62 + 48 • 40 + 60 + 50 ≈ 150 • 121-82 • 120 -80≈ 40

  12. Examples and Notes • Compatible Numbers (use mainly for x and ÷): • 38÷6 • 36 ÷6 ≈6 • 47 ÷8 • 48÷8≈6 • 29×41 • 30×40≈1,200 • 2×3,978 • 2×4,000 ≈8,000

  13. Khan Academy Links • Video: • http://www.khanacademy.org/math/arithmetic/multiplication-division/v/rounding-whole-numbers-3 • Activities: • http://www.khanacademy.org/math/arithmetic/decimals/e/rounding_whole_numbers

  14. Lesson 1-3

  15. Objective/ I can… • I can… Understand and use the properties of numbers • Homework: Worksheet 1-3

  16. Khan Academy Links • Video: • Commutative • Associative • Activities: • Commutative Practice • Associative Practice

  17. Lesson 1-4

  18. Objective/ I can… • I can… Apply the order of operations • Homework: Worksheet 1-4 and p 18, #2-30 evens

  19. New Vocabulary • Expression: No equal sign ( 3x5x2 ) P arentheses E xponents M ultiplication D ivision A ddition S ubtraction “Please Excuse My Dear Aunt Sally”

  20. Examples and Notes • Find the value of each expression: • 17- 4 x 2 • 34 + 5 x 2 - 17

  21. Examples and Notes • Find the value of each expression: • (6+18) ÷ 3 × 2 • (12-9) × (6+1)

  22. Examples and Notes • Find the value of each expression: • 200 – (99 ÷ 3) × 2

  23. Khan Academy Links • Video: • Order of Operations • Activities: • Order of Operations Practice

  24. Lesson 1-5

  25. Objective/ I can… • I can… Read, write and round decimals • Homework: Worksheet 1-5, P.24 #4-32 evens

  26. New Vocabulary • Expanded form: • A sum that shows the place value of each number • Ex: standard form 0.75 • Expanded form 0.7 + 0.05 • Ex: standard form 1.601 • Expanded form 1 + 0.6 + 0.001

  27. Place value (right of the decimal)

  28. Examples and Notes • Ex: 2.65 • Read the place value word for the last number • The 5 is in the hundredths place so, • Two and Sixty Five hundredths

  29. Examples and Notes • Ex: 13.841 • Read the place value word for the last number • The 1 is in the thousandths place so, • Thirteen AND eight hundred for one thousandths

  30. Examples and Notes • Ex: 9.04 • Read the place value word for the last number • The 4 is in the hundredths place so, • Nine and four hundedths

  31. Examples and Notes • Rounding Decimals • Same as rounding whole numbers • Underline the place value you’re rounding to. • Look next door, 0-4 to the floor, 5-9 climb the vine!

  32. Examples and Notes • Round to the nearest hundredth • 1.5226 1.5226 • Round to the nearest tenth • 9.0865129

  33. Khan Academy Links • Video: • Rounding Decimals • Activities: • Rounding Decimals Practice

  34. Lesson 1-6

  35. Objective/ I can… • I can… Compare and Order Decimals • Homework: Worksheet 1-6 and p.29 #2-20 (evens)

  36. New Vocabulary • Annex: to add a zero at the end of a decimal number • Ex: 0.3 (three tenths) • Ex: 0.30 (thirty hundredths) • Does not change the value of the number (0.3 = 0.30)

  37. Examples and Notes • Use a model to compare 0.4 and 0.36 0.4 ________ 0.36

  38. Examples and Notes • An easier way… Annex zeros • Order from least to greatest • 0.5 • 0.61 • 0.07 • 0.312 • Answer:

  39. Examples and Notes • Order from least to greatest • 3.059, 3.64, 3.46 (use annex zeros) • Answer

  40. Khan Academy Links • Video: • Ordering Decimals • Activities: • Ordering Decimals

  41. Lesson 1-7

  42. Objective/ I can… • I can… Add and subtract decimals • Homework: Worksheet 1-7 and p.34 #6-26 evens Show your work!!!

  43. New Vocabulary • Front End Estimation: Add the front digits, then estimate the rest. Ex: 1.79 1.29 + 1.49 Solve:

  44. Examples and Notes • For + and -, LINE UP THE DECIMAL POINTS! • 6.8 + 4.65 + 2.125 • Estimate first • Then solve (annex zeros) • Are they close?

  45. Examples and Notes • For + and -, LINE UP THE DECIMAL POINTS! • 3.026 + 14.7 + 1.38 • Estimate first • Then solve (annex zeros) • Are they close?

  46. Examples and Notes • Front End estimation • 2.1 +3.4 • (whole #s, then decimals, then combine) • Answer: _________

  47. Examples and Notes • Front End estimation • 3.92 + 16.21 • (whole #s, then decimals, then combine) • Answer: ________

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