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Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers.

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Presentation on theme: "Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers."— Presentation transcript:

1 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left

2 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 1 : 12.5 x 3.2

3 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 1 : 12.5 x 3.2 There are 2 total places behind the decimals…

4 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 1 : 12.5 x 3.2 There are 2 total places behind the decimals… 125 x 32 Multiply… 250 + 1250 1500

5 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 1 : 12.5 x 3.2 There are 2 total places behind the decimals… 125 x 32 Multiply… 250 + 1250 1500. ANSWER : 15.00 - Jump the decimal 2 places to the LEFT

6 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 2 : 3.75 x 0.16

7 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 2 : 3.75 x 0.16 There are 4 total places behind the decimals…

8 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 2 : 3.75 x 0.16 There are 4 total places behind the decimals… 375 x 16 2250 + 3750 6000. Multiply…

9 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 2 : 3.75 x 0.16 There are 4 total places behind the decimals… 375 x 16 2250 + 3750 6000. ANSWER : 0.6000 - Jump the decimal 4 places to the LEFT

10 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 3 : 1.234 x 8.57

11 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 3 : 1.234 x 8.57 There are 5 total places behind the decimals…

12 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 3 : 1.234 x 8.57 There are 5 total places behind the decimals… Multiply… 1234 x 857 8638 61700 + 987200 1057538

13 Multiplication of Decimal Fractions STEPS : 1. Count the number of places BEHIND the decimals 2. Treat the problem like you are multiplying whole numbers 3. Starting from the right of your answer, jump the decimal the counted number of spaces to the left EXAMPLE # 3 : 1.234 x 8.57 There are 5 total places behind the decimals… Multiply… 1234 x 857 8638 61700 + 987200 1057538. - Jump the decimal 5 places to the LEFT ANSWER : 10.57538

14 Multiplication of Decimal Fractions APPLICATIONS : When you get your paycheck, your employer is required by law to withhold some of your money in taxes. Your gross pay is your salary or wages before taxes. Your net pay is what is left over. Taxes such as federal withholding, social security, and retirement are just a few that will be taken out.

15 Multiplication of Decimal Fractions APPLICATIONS : When you get your paycheck, your employer is required by law to withhold some of your money in taxes. Your gross pay is your salary or wages before taxes. Your net pay is what is left over. Taxes such as federal withholding, social security, and retirement are just a few that will be taken out. Let’s say Jeff works for $12.75 per hour and works a 40 hour week. His taxes taken out are as follows : federal withholding = 0.138, social security = 0.0765, and retirement = 0.065. Find Jeff’s gross and net pay. ( round to pennies )

16 Multiplication of Decimal Fractions APPLICATIONS : When you get your paycheck, your employer is required by law to withhold some of your money in taxes. Your gross pay is your salary or wages before taxes. Your net pay is what is left over. Taxes such as federal withholding, social security, and retirement are just a few that will be taken out. Let’s say Jeff works for $12.75 per hour and works a 40 hour week. His taxes taken out are as follows : federal withholding = 0.138, social security = 0.0765, and retirement = 0.065. Find Jeff’s gross and net pay. ( round to pennies ) I am going to use a calculator for the computations.

17 Multiplication of Decimal Fractions APPLICATIONS : When you get your paycheck, your employer is required by law to withhold some of your money in taxes. Your gross pay is your salary or wages before taxes. Your net pay is what is left over. Taxes such as federal withholding, social security, and retirement are just a few that will be taken out. Let’s say Jeff works for $12.75 per hour and works a 40 hour week. His taxes taken out are as follows : federal withholding = 0.138, social security = 0.0765, and retirement = 0.065. Find Jeff’s gross and net pay. ( round to pennies ) I am going to use a calculator for the computations. Gross Pay = hours worked x rate

18 Multiplication of Decimal Fractions

19 To find the amount of tax taken out for each type of tax, multiply the gross wage X the decimal amount for that tax.

20 Multiplication of Decimal Fractions To find the amount of tax taken out for each type of tax, multiply the gross wage X the decimal amount for that tax.

21 Multiplication of Decimal Fractions To find the amount of tax taken out for each type of tax, multiply the gross wage X the decimal amount for that tax.

22 Multiplication of Decimal Fractions Net Pay = Gross Wage – [ all the taxes ]

23 Multiplication of Decimal Fractions APPLICATIONS : The figure below has 9 sections of equal width. Find the total distance from A to B. A B

24 Multiplication of Decimal Fractions APPLICATIONS : The figure below has 9 sections of equal width. Find the total distance from A to B. A B There are 6 sections from A to B, each 0.62” in length

25 Multiplication of Decimal Fractions APPLICATIONS : The figure below has 9 sections of equal width. Find the total distance from A to B. A B


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