6 th grade review
Download
1 / 79

6 th Grade Review - PowerPoint PPT Presentation


  • 81 Views
  • Uploaded on
  • Presentation posted in: General

6 th Grade Review. Racing Review. Race!. Whole Number Operations. Addition. 1 . 4137 + 739. 2 . 567 +139. 3 . 5602 +8835. 4 . 65391 + 87. 5 . 941372 + 128343. Solutions:. 4,876 706 14,437 65,478 1,069,715. Whole Number Operations. Subtraction. Right or Wrong?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

6 th Grade Review

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


6th Grade Review


Racing Review


Race!

Whole Number Operations

Addition

1. 4137

+ 739

2. 567

+139

3. 5602

+8835

4. 65391

+ 87

5. 941372

+ 128343


Solutions:

  • 4,876

  • 706

  • 14,437

  • 65,478

  • 1,069,715


Whole Number Operations

Subtraction

Right or Wrong?

Can you find the mistake?

  • 345

  • - 278

  • 57

2. 9864

- 671

9193

3. 149856

- 51743

97113

  • 4. 7548362

  • 969457

  • 6678905


Whole Number Operations

Multiplication

Learning Partners

  • Create 3 multiplication problems (do not use more than 3 digits)

  • Switch with a neighbor

  • Check your partner’s work


Whole Number Operations

Division

RACE!

  • 9954 ÷ 63

  • 87 ÷ 3

  • 48026 ÷ 37

  • 73080 ÷ 20

  • 850 ÷ 5

6. 210 ÷ 7

7. 54 ÷ 6

8. 2571 ÷ 3

9. 2992 ÷ 4

10. 63 ÷ 9


1. 1582. 293. 12984. 36545. 1706. 307. 98. 8579. 74810. 7

Solutions


EQ: How do I solve numerical expressions?


Launch

  • Draw a real world example of an event that must be done in a certain order

Order is

important!


Vocabulary

Term

EXAMPLE

Expression – a collection of numbers and operations

11 – 14 ÷ 2 + 6


P - parentheses

E - exponents

M - multiply

D - divide

A – add

S - subtract

Vocabulary

PEMDAS

EXAMPLE

11 – 14 ÷ 2 + 6

Order of Operations

– the rules we follow when simplifying a numerical expression


Order of Operations

Which student evaluated the arithmetic expression correctly?

Susie!


Using the Order of Operations

Example 1

Simplify the expression.

3 + 15 ÷ 5

Divide.

3 + 15 ÷ 5

3 + 3

Add.

6


Using the Order of Operations

Example 2

Simplify the expression.

44 – 14 ÷ 2 · 4 + 6

44 –14 ÷ 2 · 4 + 6

Divide and multiply from

left to right.

44 –7 · 4 + 6

44 – 28 + 6

Subtract and add from

left to right.

16 + 6

22


Using the Order of Operations

Example 3

Simplify the expression.

3 + 23 · 5

Evaluate the power.

3 + 23 · 5

Multiply.

3 + 8 · 5

3 + 40

Add.

43


Using the Order of Operations

Example 4

Simplify the expression.

28 – 21 ÷ 3 · 4 + 5

28 –21 ÷ 3 · 4 + 5

Divide and multiply from

left to right.

28 –7 · 4 + 5

Subtract and add from

left to right.

28 – 28 + 5

0 + 5

5


Helpful Hint

When an expression has a set of grouping symbols within a second set of grouping symbols, begin with the innermost set.

Grouping Symbols

[ ]

( )

{ }


Using the Order of Operations with Grouping Symbols

Example 5

Simplify the expression.

42 – (3 · 4) ÷ 6

Perform the operation inside the parentheses.

42 –(3 · 4) ÷ 6

42 –12 ÷ 6

Divide.

42 – 2

Subtract.

40


Using the Order of Operations with Grouping Symbols

Example 6

Simplify the expression.

A. 24 – (4 · 5) ÷ 4

Perform the operation inside the parentheses.

24 – (4 · 5) ÷ 4

24 –20 ÷ 4

Divide.

24 – 5

Subtract.

19


Using the Order of Operations with Grouping Symbols

Example 7

Simplify the expression.

[(26 – 4 · 5) + 6]2

The parentheses are

inside the brackets, so

perform the operations

inside the parentheses

first.

[(26 –4 · 5) + 6]2

[(26 –20) + 6]2

[6 + 6]2

122

144


Using the Order of Operations with Grouping Symbols

Example 8

Simplify the expression.

[(32 – 4 · 4) + 2]2

The parentheses are

inside the brackets, so

perform the operations

inside the parentheses

first.

[(32 –4 · 4) + 2]2

[(32 –16) + 2]2

[16 + 2]2

182

324


Try this one on your own!

Example 9

3 + 6 x (5+4) ÷ 3 - 7

Step 1: Parentheses

3 + 6 x (5+4) ÷ 3 – 7

Step 2: Multiply and Divide in order from left to right

3 + 6 x9 ÷ 3 – 7

3 + 54÷ 3 – 7

Step 3: Add and Subtract in order from left to right

3 + 18 - 7

Solution: 14


Try another!

Example 10

150 ÷ (6 +3 x 8) - 5

Step 1: Parentheses

150 ÷ (6 +3 x 8) – 5

Step 2: Division

150 ÷30 – 5

Step 3: Subtraction

5– 5

Solution: 0


Challenge!

Classify each statement as true or false. If the statement is false, insert parentheses to make it true.

(

)

false

1. 4  5 + 6 = 44

2. 24 – 4  2 = 40

(

)

false

true

3. 25÷ 5 + 6  3 = 23

4. 14 – 22 ÷ 2 = 12

true


Application

Sandy runs 4 miles per day. She ran 5 days during the first week of the month. She ran only 3 days each week for the next 3 weeks. Simplify the expression (5 + 3 · 3) · 4 to find how many miles she ran last month.

Perform the operations in parentheses first.

(5 + 3 · 3) · 4

(5 + 9) · 4

Add.

Multiply.

14 · 4

56

Sandy ran 56 miles last month.


Application*

Jill is learning vocabulary words for a test. From the list, she already knew 30 words. She is learning 4 new words a day for 3 days each week. Evaluate how many words will she know at the end of seven weeks.

Perform the operations in parentheses first.

(3 · 4 · 7) + 30

(12 · 7) + 30

Multiply.

Add.

84 + 30

Jill will know 114 words at the end of 7 weeks.

114


Application*

Denzel paid a basic fee of $35 per month plus $2 for each phone call beyond his basic plan. Write an expression and simplify to find how much Denzel paid for a month with 8 calls beyond the basic plan.

$51


Ticket out the door

Simplify each expression.

1. 27 + 56 ÷ 7

2. 9 · 7 – 5

3. (28 – 8) ÷ 4

4. 136 – 102 ÷ 5

5. (9 – 5)3 · (7 + 1)2 ÷ 4

35

58

5

116

1,024


Lesson 2

EQ: How can I perform operations with fractions?


Fraction Action Vocabulary

Math Dictionary

Example


Math Dictionary

Fraction Action Vocabulary

Example


Adding Fractions

1. 1/5 + 2/5

2. 7/12 + 1/12

3. 3/26 + 5/26

With Like Denominators!


Adding Fractions

With Different Denominators!

1. 2/3 + 1/5

2. 1/15 + 4/21

3. 2/9 + 3/12

  • Steps:

  • Find the LCD

  • Rename the fractions to have the same LCD

  • Add the numerators

  • Simplify the fraction


Subtracting Fractions

1. 3/5 - 2/5

2. 7/10 – 2/10

3. 21/24 – 15/24

With Like Denominators!


Subtracting Fractions

With Different Denominators!

1. 2/3 – 4/12

2. 4/6 – 1/15

3. 2/12 – 1/8

  • Steps:

  • Find the LCD

  • Rename the fractions to have the same LCD

  • Subtract the numerators

  • Simplify the fraction


Multiplying Fractions

1. 2/9 x 3/12

2. ½ x 4/8

3. 1/6 x 5/8

  • Steps:

  • Multiply the numerators

  • Multiply the denominators

  • Simplify the fraction


Dividing Fractions

  • Steps:

  • Keep it, change it, flip it!

  • Multiply the numerators

  • Multiply the denominators

  • Simplify the fraction

1. 2/10 ÷ 2/12

2. 1/8 ÷ 2/10

3. 1/6 ÷ 3/15

Keep it, Change it, Flip it!


Lesson 3

More with fractions


Fraction Action Vocabulary

Math Dictionary

Example


Changing Improper Fractions to Mixed Numbers

  • Steps:

  • Divide

  • Remember…First come, first serve

1. 55/9

2. 39/4

3. 77/12

Divide!


Changing Mixed Numbers to Improper Fractions

  • Steps:

  • Multiply the whole number by the denominator

  • Add the result to the numerator (that will be your new numerator)

  • The denominator stays the same

1.

2.

3.

Check Mark Method


Operations with Mixed Numbers

1.

2.

  • Steps:

  • Convert both mixed numbers to an improper fraction

  • Follow the necessary steps for the given operation

  • Simplify


Equivalent Fractions

True or False?

  • 3/8 = 375/1000

  • 18/54 = 23/69

  • 6/10 = 6000/1000


Solutions:

  • True

  • True

  • False


Fraction BINGO

Homework: handout


Lesson 4

EQ: How do I perform operations with decimals?


Decimals

Math Dictionary

  • A way to represent fractions

  • EX:

  • Look at the last decimal place…that place value is the denominator of the fraction

  • 2. The numbers to the right of the decimal are the numerator


Place Value

Math Dictionary

  • The value of a digit based on its position in a number


EXAMPLE


Place Value Game

FunBrain - Place Value Puzzler


Ordering

  • Order from least to greatest

    3.84, 4.4, 4.83, 3.48, 4.38

    5.71, 5.8, 5.68, 5.79, 5.6


Comparing Decimals

1. 6.5 ____ 6.45

  • 12.4312 _____ 12.43112

  • .6 ____.61


Rounding

  • Round to the nearest one

    17.6

    • Nearest thousandth

      12.5503

    • Nearest hundredth

      2.2959


Decimal Operation Chant

Do you know your decimals?

Do you know your decimals?

Add or Subtract, line it up, line it up!

Add or Subtract, line it up, line it up!

Multiply, Count it out, count it out!

Multiply, Count it out, count it out!

Division, step it out!

Division, step it out!

Now you know your decimals!

Now you know your decimals!


Adding and Subtracting Decimals

  • Just make sure to line up the decimal points so that all the decimal points are on a vertical line

Draw a line through the points!

HINT:


Try some!

156.7 + 23.14 =

57.123 – 14.25 =


Multiplying Decimals

  • Multiply the numbers like normal

  • Move the decimal to the right the exact number of place values in the numbers being multiplied


Try One!

45.68 x 3.5=


Dividing Decimals

  • Stranger Story

    • The stranger moves toward the door, so you move the same amount back

    • The stranger gets to the door!

    • GET AWAY! Go to the ROOF!


Dividing Decimals

  • Then, divide like normal


Try these!

16.9 ÷ 6.5

55.318 ÷ 3.4


Handout


Lesson 4

EQ: How are percents, ratios, and proportions related?


Percent:

Math Dictionary

  • A ratio that compares a number to 100

  • Out of 100

  • Part/whole

25%

30%

95%

73%


Ratio:

Math Dictionary

  • A comparison of two numbers

  • Part

    Part

What is the ratio of pink circles to white circles?


Proportion:

Math Dictionary

  • An equation that shows two ratios are equal

Examples


Conversions

Convert to a fraction and a percent…

1. .25

2. .003


Conversions

Convert to a percent and decimal…

1. 3/4

2. 23/50


Conversions

Convert to a fraction and a decimal…

1. 25%

2. 104%


Skittles Activity


Lesson 5

EQ: How can I evaluate algebraic expressions?

Card activity


Variable --

Math Dictionary

  • An unknown quantity

x

k

z

y

m


Expression --

Math Dictionary

  • A collection of numbers, variables, and symbols

  • NO equal sign!!

Example

10 (x+3) + 2


Simplify --

Math Dictionary

  • To reduce to the most basic form

  • Make it simple!

  • 3 + 5 (3*5)

Examples


Plug it in, Plug it in!

Find the variable, replace it

Simplify the expression

Now your all done

Just remember to…

PLUG IT IN! PLUG IT IN!


Learning Partner Class Work

Handout


ad
  • Login