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P. O. D. 11/29/06

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P. O. D. 11/29/06. List all of the factors of 16. What numbers are factors of 150? 2 3 4 5 6 9 10 Use factor and product in a sentence to describe 7 x 5 = 35. Write this number in word form: 2.09. P. O. D. 11/16/07. List all of the factors of 20. What numbers are factors of 435?

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P. O. D. 11/29/06

• List all of the factors of 16.
• What numbers are factors of 150?
• 2 3 4 5 6 9 10
• Use factor and product in a sentence to describe 7 x 5 = 35.
• Write this number in word form: 2.09

P. O. D. 11/16/07

• List all of the factors of 20.
• What numbers are factors of 435?
• 2 3 4 5 6 9 10
• Use factor and product in a sentence to describe 8 x 2 = 16.
• Write 35.241 in
• expanded form:
• word form:

P. O. D. 11/19/07

• List all of the factor pairs for 18.
• Put these numbers in order from least to greatest: 23.451, 24.41, 24.541, 23.154
• Write 23.16 in
• expanded form:
• word form:

P. O. D. 11/26/07

• Put these numbers in order from least to greatest: 7.22, 70.2, 70.22, 7.02
• Round these numbers to the nearest hundred:
• 551
• 6,423
• 11,292.14
• Write 416.203 in
• expanded form:
• word form:

Rounding Decimals Notes (pg. 11 in binder)

• Round 76.285 to the nearest hundredth.
• Underline the place value that you are rounding.
• Box in that underlined number and one number to the right of it.
• Round up or down, writing above original number.
• All of the numbers to the left stay the same, and all of the numbers to the right turn into 0.

Round each number to the nearest hundredth.

• 4.981
• 2.008
• Round each number to the nearest tenth.
• 0.159
• 12.602

Rounding Decimals for Estimation (back of pg. 11)

• Estimate \$3.79 + \$2.12.
• In your head, round to the easiest place.
• Once numbers are rounded in your head, follow directions.
• You should be able to estimate all in your head! If you can’t you’ve made it too hard! Round to the easiest place for you!

Estimate each answer.

• \$5.33 + 2.91 =
• 71  9 =
• 29 x 3.1 =
• 31 – 6 =

Warm Up 1/23/09

• Write 123.9 in
• expanded form:
• word form:
• Round 13.961 to the nearest tenth.
• Round 5.6229 to the nearest hundredth.
• Estimate \$5.21 x \$7.98 =

P. O. D. 11/27/07

• Write 27.901 in
• expanded form:
• word form:
• Put these numbers in order from least to greatest: 26.541, 26.145, 21.645, 25.641
• Round 5.086 to the nearest hundredth.
• Estimate \$10.33 + \$5.91 =

P. O. D. 11/28/07

• Write each decimal in standard form:
• four tenths
• five and seven hundredths
• Fill in the blank with >, <, or =
• 23.04 ___ 23.40 14.4 ___ 14.40
• 3. Round 123.991 to the nearest tenth.
• 4. Round 33.9123 to the nearest hundredth.

P. O. D. 12/11/06

• 13.98 – 3.001
• 22.4 + 1.652
• 5.89 – 1.983

Warm Up 1/7/09

• 15. 2 – 3.268
• 32.55 + 1.999
• 13.23 – (2.875 + 3.62)

Decimal Computations

Adding and Subtracting Decimals

*You must line up the decimals!!

*You may use zeros as place holders for “empty” spots!

Ex: 5.4 – 1.23

Ex. 16.77 + 9.9999

(12.3 – 8.209) + (4.3 + 2.11)

• 19.33 + (4.07 – 1)
• 14.75 + 2.1 – (2.654 + 3.62)
Warm Up 1/8/09
• Work with your partner to complete the “chicken sheet” and come up with the answer to the riddle at the end! You have 15 min!!
POP QUIZ 1/9/09
• 1. 15.67 + 9.774 =
• 2. 45.6 – 2.3345 =
• 3. 0.665 + 4.3321 =
• 4. 14.5 – 5.4499=
• 5. Round 54.889 to the nearest hundredth.

Multiplying Decimals

• Ex: 3.6 x 0.4 =
• Multiply the factors like they are whole numbers.
• Count how many numbers are to the right of the decimal in the original problem.
• Begin at the right in the product, count over that many spaces, and put your decimal point.

Find the product.

• 1.6 x 2.8 3.15 x 2.3
• 3.1 x 77 42 x 4.8

P. O. D. 12/14/06

• (15 + 7.875) + (19.6 + 10)
• 20.333 - (5.06 - 2)
• 20.22 + 2.1 – (7.5 – 3.01)

Warm Up 1/9/09

• 12 + 3.72 + 10.39 – 1.8
• (6.03 - 4) + 16.722
• 12.8 x 3.4
• 5.6 x 8.9

P. O. D. 1/8/07

• List all of the factors of 24.
• What numbers are factors of 345?
• 2 3 4 5 6 9 10
• Use multiple in a sentence to describe 12, 24, 36.
• Write 23.68 in
• expanded form:
• word form:

P. O. D. 1/9/07

• The Johnsons are planning their backyard for their new house. How much grass will they need to cover the area? How much fencing will they need to surround the area?
• - Grass:
• - Fencing:
• 2. The Martins are also planning their backyard.
• - Grass:
• - Fencing:

30 yards

20 yards

25 yards

15 yards

P. O. D. 12/3/07

• 12.11 – 4.999 3. 4.15 x 3.2
• 16.2 + 1.872 4. 6.21 x 2.45

Dividing Decimals

• Ex: 35.4 ÷ 6 =
• Divide like normal – keep dividing – no remainders!
• Put the decimal point in the answer directly above the decimal in the dividend.
• *Keep your work lined up neatly!

P. O. D. 1/11/07

• 6.25 x 3 - 4 3. 3.36 x 2 + 4.2 x 3
• 12.5 + 4 x 1.9 4. 9.25 x 4 x 1.75

divisor

quotient

dividend

Dividing Decimals (pg. 13)

Dividing Decimals Notes

• Move the decimal in the divisor all the way to the right.
• Move the decimal point in the dividend the same number of places.
• Divide as normal.
• Place the decimal point in the answer in the same point above the place in the dividend.

Find the quotient.

• 6.37 ÷ 9.1 1.26 ÷ 0.9
• 11.24 ÷ 9 6 ÷ 0.12

Warm Up 1/12/09

• .32 + 4 x 1.5 3. 3.6 x 0.6
• 4.25 + 3.1 x 6 4. 1.2 - 0.34

P. O. D. 1/16/07

• 9.0 ÷ 4 3. 3.3 ÷ 2
• 6.15 ÷ 6 4. 4.1 ÷ 2

P. O. D. 1/9/08

• 1 ÷ 4 3. 3 ÷ 4
• 1 ÷ 2 4. 2 ÷ 3
Buzzing for Products Game
• Player 1 chooses two problems by placing markers on them.
• Both partners solve the problem and come to an agreement on the answer.
• Give player 1 the points based on which “bee hive” the answer falls in.
• Do the same process again with player 2, repeat, etc.
• Be thinking of strategies of how to win the game!!
Warm Up 1-20-09
• 1. If I have ½ of the class who went to the Auburn Basketball game on Saturday, how many students would you say went?
• 2. Are there other ways that you could show me or tell me that ½ of the class went without using a fraction? What are they? (I can think of two…)
• 3. Would there be another way to make this statement: “I surveyed my class and found that ¾ of them like country music.”

Changing Fractions to Decimals

• Change 3/4 to a decimal.
• There are two ways to do this.
• You can make a fraction equivalent to x/10 , x/100 , x/1,000IF you know this easily in your head.
• You can divide the numerator by the denominator.
Warm Up 1/21/09
• Change the following fractions to decimals:

¼

6/7

13/20

6/25

8/10

Changing Decimals to Fractions

• Write 0.95 as a fraction.
• Write it as a fraction like you say it.
• Ex: ninety-five hundredths =
• Reduce if necessary.

Warm Up 1/22/09

• Write 2.34 as a fraction in simplest form.
• Write 0.250 as a fraction in simplest form.
• Change 2 3/50 to a decimal.
• Change 8/9 to a decimal.

http://www.quia.com/jg/65724.html

P. O. D. 1/11/08

• 5.9 – 2.803
• Change 5/6 to a decimal.
• 4.25 x 1.3
• 0.935 ÷ 0.5

P. O. D. 1/14/08

• 7.72 ÷ 2
• Change 3/25 to a decimal.
• Write 0. 15 as a fraction in simplest form.
• What is 50% as a fraction? As a decimal?

Changing Decimals to Percents

• Ex: Change 0.23 to a percent.
• Move the decimal point two places to the right.
• Put the percent sign (%) on the right side of the number.

Changing Percents to Decimals

Ex: Change 75% to a decimal.

1. Move the decimal point two places to the left.

2. Drop the percent sign (%).

Changing Percents to Decimals

• Ex: Change 75% to a decimal.
• Move the decimal point two places to the left.
• Drop the percent sign (%).

P. O. D. 1/15/08

• 45.6 ÷ 2
• Change 120/500 to a decimal.
• Write 0. 40 as a fraction in simplest form.
• What is 25% as a fraction? As a decimal?

P. O. D. 1/16/08

Fill in the FDP Chart

P. O. D. 1/17/08

Fill in the FDP Chart. Turn in when finished.

P. O. D. 1/18/08

Fill in the FDP Chart.

Changing Percents to Fractions

• Ex: Change 5% to a fraction.
• Change the percent to a decimal.
• 5% =
• 2. Change the decimal to a fraction and simplify.
• 0.05= =

Changing Fractions to Percents

• Ex: Change 3/10 to a percent.
• Change the fraction to a decimal.
• 3/10 =
• 2. Change the decimal to a percent.
• 0.3 = %

P. O. D. 1/25/07

• Change 45/100 to a percent.
• Change 5% to a fraction.
• Change 2/5 to a percent.
• Change 12.5% to a fraction.

P. O. D. 1/22/08

• Change 125% to a decimal.
• Change 30% to a decimal.
• 525 x 1.1 4. 90 x 0.75

Finding the Percent of a Number

• Ex: Find 75% of 90.
• Change the percent to a decimal.
• Multiply. Remember to put the decimal in the answer.

Practice Problems

• 15% of 40 3. 45% of 90
• 25% of 100 4. 125% of 100

P. O. D. 1/23/08

• 1) 45% of 28 3) 108% of 64
• 2) 5.5% of 525 4) 9% of 23

P. O. D. 1/24/08

• GET A CALCULATOR
• What is 4% of 16? 3) 50 .
• 100
• What is 4.5% of 50? 4) 5 .
• 100

Another way to find the % of a number

• Ex: What is 75% of 90?
• Write the equation: is = % .
• of 100
• 2. Fill in the numbers that you know from the problem.
• 3. Solve for the unknown.
• *Remember to divide by the number hooked onto the letter!*

Solve the algebra way!

• 1) What is 45% of 28? 3) What is 108% of 64?
• 2) What is 5.5% of 525? 4) What is 9% of 23?

On white boards…

• 1) What is 75% of 40? 3) 66 is what percent of 120?
• 2) What is 24% of 80? 4) 49 is what percent of 70?

On white boards…

• 5) What is 95% of 180? 7) 14 is what % of 70?
• 6) What is 12% of 60? 8) 43.2 is what % of 72?

On white boards…

• 9) What is 40% of 80? 11) What is 45% of 90?
• 10) What is 65% of 700? 12) What is 25% of 16?

On white boards…

• 13) What is 18% of 420? 15) What is 63% of 80?
• 14) What is 18% of 70? 16) What is 15% of 52?

On white boards…

• 17) What is 4.5% of 900? 19) What is 12.5% of 33?
• 18) What is 5% of 90? 20) What is 3% of 72?

P. O. D. 1/31/07

You find a shirt that costs \$24.99. You have a coupon for 15% off.

How much will your discount save you?

How much will your shirt cost?

How much will your discount save you?

How much will your shoes cost on sale?

How much will they cost on sale with 8% tax?

P. O. D. 2/01/07

You find shoes that cost \$78.99. You have a coupon for 25% off.

How much will your shoes cost on sale?

How much will they cost on sale with 8% tax?

P. O. D. 2/02/07

Mike orders a calzone at the Brick Oven for 5.49 and a drink for \$0.99.

How much is his bill with 8% tax?

How much tip should he leave (15%)?

P. O. D. 2/5/07

Susan orders a hamburger at Cheeburger Cheeburger \$5.99 and a drink for \$1.49.

How much is her bill before tax?

How much is her bill with 8% tax?

How much tip should she leave? (15%)

P. O. D. 2/6/07

Items: Shoes \$39 and jacket \$84

Tax: 7.5%

Subtotal:

Sales Tax:

Total:

Notice this receipt asks for tax separate

P. O. D. 2/7/07

You pick out an iPod nano for \$149.99.

You have a coupon for 25% off.

How much will your discount save you?

How much will the nano cost on sale?

How much will it cost on sale with 6.5% tax?

P. O. D. 2/8/07

Jenny put \$200 into a savings account at a rate of 5% per year. She did not make any deposits or withdrawals.

How much does Jenny have in her account at the end of one year?

How much does Jenny have in her account at the end of two years?

P. O. D. 2/9/07

• How much would you owe on your credit card if you charged \$600 at 16% after 2 months?
• 1 month =
• 2 months =
• 2. Target is selling CDs at a price of 2 for \$21.00. How much does each CD cost?

P. O. D. 2/12/07

• How much does one piece of bread cost if the loaf costs \$1.49 and there are 36 slices?
• How much tip (20%) would you leave if your bill total was \$6.99.
• Change 2/3 to a percent.

P.O.D. 2/13/07

• You have a coupon for 10% off of a \$12 CD.
• How much is your CD after the discount?
• How much is your total including 8% tax?
• Marcus opens a savings account with \$250 at 5.5% simple annual interest. He makes no more deposits or withdrawals. Fill out the table.

P.O.D. 2/14/07

You open up a box of candy hearts and count each color.

Finish filling in the data in the table.

What percent of your hearts are pink and orange? ______

P. O. D. 1/17/06

• Write 40/1000 in simplest form.
• 3/4 = ?/100
• Change 21/5 to a mixed number.
• Write 9.65 in word form.

P. O. D. 1/18/06

• Write 225/1000 in simplest form.
• 3/25 = ?/100
• Change 17/3 to a mixed number.
• Write 3.15 as a fraction in simplest form.

P. O. D. 1/20/06

• Write 4.95 as a fraction in simplest form.
• Write 0.006 as a fraction in simplest form.
• Change 1/25 to a decimal.
• Change 1 2/9 to a decimal.

Estimate. Then add or subtract.

• 22.7 – 12.06
• 1.79 + 0.879
• 13.45 – 5.001
• 4.9 + 0.6 + 4
• 5 + 6.2 + 4.05

P. O. D. 1/25/06

• 2.52 ÷ 0.5
• 1.17 ÷ 0.9
• 16.65 ÷ 0.15
• 3.25 x 5.9

P. O. D. 1/26/06

• 2.52 x 10
• 2.52 x 100
• 2.52 x 1,000
• 123.4 ÷ 10
• 123.4 ÷ 100

P. O. D. 1/27/06

• 43.1 x 10
• 43.1 x 100
• 23.2 ÷ 10
• Which is larger? A centimeter or a meter?

P. O. D. 1/30/06

• 13.45 – 5.001
• Change 13/20 to a decimal.
• Write 0.008 as a fraction in simplest form.
• 12.3 x 6.1

P. O. D. 1/31/06

• 5.9 – 2.803
• Change 5/6 to a decimal.
• Write 6.16 as a fraction in simplest form.
• 0.935 ÷ 0.5

P. O. D. 2/1/06

• 15.7 – 8.923
• Change 6/11 to a decimal.
• Write 1.25 as a fraction in simplest form.
• 12.3 x 6.1

P. O. D. 2/2/06

• List the factor pairs for 28.
• 33 = ___
• Do a factor tree or division ladder for 30. Write the prime factorization in exponent form.

P. O. D. 2/3/06

• List the first 5 multiples for 9.
• What is the greatest common factor (GCF) for 75 and 200?
• (6 + 2) x 3 ÷ 4 =

P. O. D. 2/7/06

• 21 ÷ 3 x 6 - 4 =
• Change 11/40 to a decimal.
• Write 5% as a decimal and a fraction.
• Write 9/20 as a decimal and a percent.

P. O. D. 2/8/06

• 22(4 + 6) ÷ 2 - 5 =
• Write 3/8 as a decimal and a percent.
• Write 18% as a decimal and a fraction.
• What is 50% of 24?

P. O. D. 2/14/06

• Change 13/40 to a decimal.
• Change 0.25 to a percent.