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Presentation transcript:

Today’s lesson . . . What: Why: Introduction To Fractions, Decimals, & Percentages, and converting between decimals and percentages. Why: To review basic fraction, decimal, and % knowledge, and to begin converting between decimals and percentages.

What makes fractions, decimals, and percentages similar? A proper FRACTION represents a part out of a larger ______________________________. A PERCENT represents a part out of _______________________________________________. A DECIMAL number also represents the relationship between a whole number and its ______________________________________. whole one-hundred parts

What makes fractions, decimals, and percentages similar? Let’s fill-in some of the missing parts: 100% 0.5 50% 100% 0.25 0.5 0.75 25% 75% 50% 100% 0.25 0.5 0.75 25% 75% 50% 100%

Who can say above # in “Decimal Review: Can you identify the place value names for each of the following digits???? 1, 1 2 5 . 0 0 0 5 tens ones tenths thousands hundreds hundredths thousandths ten-thousandths Who can say above # in “Decimal language”?

Naming Decimals: Write the decimal for the following: Four hundredths _______________________________________ Three and two-tenths ________________________________________ Fifty and three-thousandths ____________________________________ Five hundred and nine-tenths 0.04 3.2 50.003 500.9

Naming Decimals: Write the words out for the following decimal #’s: 1. 0.08 ________________________________________ 3.2 0.001 _________________________________________ 4. 45.1 _________________________________________ eight-hundredths three and two-tenths one-thousandth forty-five and one-tenth

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z CONVERTING decimals and percentages: 0.125 = ___________ 12.5% A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 5% = _____________ 0.05 Decimal to Percent: Move decimal point __________ spaces to the __________________ ! Percent to Decimal: Move decimal point _________ spaces to the ____________________! 2 right 2 left

Together . . . DECIMAL PERCENT 1. 2. 3. 4. 5. 6. 7. 8. 0.35 35% 0.6 60% 0.04 4% 4.8 480% 0.062 6.2% 0.035 3.5% 1 100% 1.5 150%

GROUP COMPETITION! DECIMAL PERCENT 1. 2. 3. 4. 5. 6. 7. 8. 0.44 44% 0.09 9% 0.07 7% 5.25 525% 0.216 21.6% 0.57 57% 1.05 105% 2.8 280 %

END OF LESSON Next slides are student copies of the notes for this lesson. These notes were handed out in class and filled-in as the lesson progressed. NOTE: The last slides in any lesson slideshow (entitled “Practice Work”) represent the homework assigned for that day.

NAME: NOTES DATE: ______/_______/_______ What: Intro to fractions, decimals, %’s and Converting between Decimals and %’s Why: To review basic fraction, decimal, and % knowledge, and to begin converting between decimals and percentages. A proper FRACTION represents a part out of a larger _______________. A PERCENT represents a part out of _______________. A DECIMAL number also represents the relationship between a whole number and its __________________. What makes fractions, decimals, and percentages similar? “Decimal Language” and Place Value: 1, 1 2 5 . 0 0 0 5

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Naming Decimals: Write the decimal for the following: 1. Four hundredths ______________________________________________________________ 2. Three and two-tenths_________________________________________________________ 3. Fifty and three-thousandths__________________________________________________ 4. Five hundred and nine-tenths________________________________________________ 3. 0.001_________________________________________________________________________ 4. 45.1____________________________________________________________________________ Write the words out for the following decimal #’s: 0.08____________________________________________________________________________ 3.2_____________________________________________________________________________ Converting decimals and percents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z “To the right, to the right!” “To the left, to the left!” Decimal to Percent: Move decimal point __________ spaces to the _______________ ! Percent to Decimal: Move decimal point _________ spaces to the ________________! 0.125 = ___________ 5% = ___________

CLASSWORK Together (GuIDED): Group competition: DECIMAL PERCENT 1. 35% 2. 0.6 3. 4% 4. 4.8 5. 6.2% 6. .035 7. 100% 8. 1.5 DECIMAL PERCENT 1. 44% 2. 0.09 3. 7% 4. 5.25 5. 21.6% 6. 0.57 7. 105% 8. 2.8

“Converting decimals and percentages” Homework/practice NAME:__________________________________________________________________________________DATE:_____/_____/__________ “Converting decimals and percentages” Directions: Fill-in-the-table by converting between decimals and percentages. The first two are done for you. P to D: move 2 to the left! D to P: move 2 to the right! DECIMAL PERCENT 1. 1.04 104% 2. 0.05 5% 3. 24% 4. 8.03 5. 5.3% 6. 0.625 7. 1% 8. 2.5 9. 0.62% 10. 0.4 11. 85.5% 12. 95.5