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 NotesTrillions Billions Millions Thousands Ones

Hundred Trillions

Ten- Trilions

Trillions

Hundred Billions

Ten Billions

Billions

Hundred Millions

Ten Millions

Millions

Hundred Thousands

Ten Thousands

Thousands

Hundreds

Tens

Ones

Place Value: 151381,862, 394

Examples and Notes

• Compare:• 8,215 ______ 8,125

• 8,801 ______ 810 ______ 801

• 29,286_____ 29,826 ______ 29,628

Examples and Notes

• Write in words:• 1,256- • One thousand, two hundred, fifty six.– No “AND”!

• 1,001,001• One million, one thousand, one

Lesson 1-2

Objective/ I can…

I can… Estimate with whole numbers

Homework: Worksheet 1-2 and puzzle 1-2

New Vocabulary

•Compatible numbers:•Numbers that are easy to

compute mentally

Examples and Notes

• Estimate by rounding (nearest 10 or 100):• 37 + 62 + 48• 40 + 60 + 50 ≈ 150

• 121-82• 120 -80≈ 40

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

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

Lesson 1-3

Objective/ I can…

I can… Understand and use the properties of numbers

Homework: Worksheet 1-3

Khan Academy Links

• Video: • Commutative • Associative• Activities: • Commutative Practice• Associative Practice

Lesson 1-4

Objective/ I can…

I can… Apply the order of operations

Homework: Worksheet 1-4 and p 18, #2-30 evens

New Vocabulary

• Expression: No equal sign ( 3x5x2 )P arenthesesE xponentsM ultiplicationD ivisionA dditionS ubtraction

“Please Excuse My Dear Aunt Sally”

Examples and Notes

• Find the value of each expression:• 17- 4 x 2

• 34 + 5 x 2 - 17

Examples and Notes

• Find the value of each expression:• (6+18) ÷ 3 × 2

• (12-9) × (6+1)

Examples and Notes

• Find the value of each expression:• 200 – (99 ÷ 3) × 2

Khan Academy Links

• Video: • Order of Operations• Activities: • Order of Operations Practice

Lesson 1-5

Objective/ I can…

I can… Read, write and round decimals

Homework: Worksheet 1-5, P.24 #4-32 evens

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

Place value (right of the decimal)Hundreds

Ones

. Tenths

hundreths

thousandths

Ten thousandths

Hundred thousandths

Millionths

Ten millionths

Hundred millionths

billionths

Ten Billionths

Hundred billionths

Trillionths

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

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

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

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!

Examples and Notes

• Round to the nearest hundredth• 1.5226

1.5226

• Round to the nearest tenth• 9.0865129

Khan Academy Links

• Video: • Rounding Decimals• Activities: • Rounding Decimals Practice

Lesson 1-6

Objective/ I can…

I can… Compare and Order Decimals

Homework: Worksheet 1-6 and p.29 #2-20 (evens)

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)

Examples and Notes

• Use a model to compare 0.4 and 0.36

0.4 ________ 0.36

Examples and Notes

• An easier way… Annex zeros• Order from least to greatest• 0.5• 0.61• 0.07• 0.312• Answer:

Examples and Notes

• Order from least to greatest• 3.059, 3.64, 3.46 (use annex zeros)

• Answer

Khan Academy Links

• Video: • Ordering Decimals• Activities: • Ordering Decimals

Lesson 1-7

Objective/ I can…

I can… Add and subtract decimals

Homework: Worksheet 1-7 and p.34 #6-26 evens

Show your work!!!

New Vocabulary

• Front End Estimation: Add the front digits, then estimate the rest.

Ex: 1.791.29

+ 1.49Solve:

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?

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?

Examples and Notes

• Front End estimation• 2.1 +3.4• (whole #s, then decimals, then combine)

• Answer: _________

Examples and Notes

• Front End estimation• 3.92 + 16.21• (whole #s, then decimals, then combine)

• Answer: ________

Examples and Notes

• Front End estimation• 16 – 8.79 • (whole #s, then decimals, then combine)• Annex zeros

• Answer:_____

Khan Academy Links

• Video: • Add Decimals• Subtract Decimals• Activities: • Add Decimals• Subtract Decimals

Lesson 1-8

Objective/ I can…

I can… Multiply decimals

Homework: Worksheet 1-8

Khan Academy Links

• Video: • Multiply Decimals• Activities: • Multiply Decimals Practice

Lesson 1-9

Objective/ I can…

I can… Divide decimals

Homework: Worksheet 1-9

Khan Academy Links

• Video: • Divide Decimals• Activities: • Divide Decimals Practice