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Do Now 10/24/11 Take out your HW from Friday. –Text p. 77, #1-4 Copy HW in your planner. –Text p. 80, #14-38 evens, 44-50 evens, 55 & 56 Be ready to copy POTW #7

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Homework Text p. 77, #1-4 all 1) 500 cans 2) 76 Empire State Buildings 3) 36 black keys 4) 110 Hz

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Objective SWBAT write fractions as decimals, write decimals as fractions, and determine whether a decimal is terminating or repeating.

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Terminating decimal a decimal that comes to an end 0.25 0.625-0.98753.2 Section 2-6, “Equivalent Fractions and Decimals”

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Repeating decimal a decimal that repeats with the same pattern forever 0.333… = 0.3 1.8333… = 1.83 -0.727272… = -0.72 You can also write a repeating decimal by placing a BAR over the repeating part.

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F D raction ecimal To convert a fraction to a decimal, divide the numerator by the denominator.

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Writing Fractions as Decimals Rewrite the fraction as a decimal. This means 3 divided by 4. A fraction is the quotient of two integers Remember 34 0 28 2 75 Finished.0 20 F D

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Writing Fractions as Percents Rewrite the fraction as a decimal. This means 5 divided by 12. A fraction is the quotient of two integers Remember 512 0 48 2 41 Repeating decimal.00 12 8 0 6 72 8 F D -

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Writing Improper Fractions as Decimals F D 98 1 8 1 12 Finished.00 8 2 0 5 16 Rewrite the fraction as a decimal. This means 9 divided by 8. A fraction is the quotient of two integers Remember 4 40

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= Writing Fractions as Decimals Writing Fractions as Decimals = When writing a fraction as a decimal, think of the fraction as a division expression. Then divide the numerator by the denominator. = -0.8 = 1.1875 = = 0.2222222… = 0.2 F D

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D F raction ecimal To convert a decimal to a fraction, use the place value of the last digit to the right of the decimal point as the denominator of the fraction. Then simplify.

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Writing Decimals as Fractions 0.71“seventy-onehundredths” 100 D F 71 71 1 is in the “hundredths” place

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Writing Decimals as Fractions 2.4 “two and four tenths” 10 D F 4 4 is in the “tenths” place 2 5 = Simplify 2 2 12 12 5 or

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Practice When writing a decimal as a fraction, say and write the fraction. Then simplify the fraction by dividing common factors. 0.8 0.8 -0.375 -0.375 2.64 2.64

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Decimals = Fractions “Part or a portion of the WHOLE” 4 tenths 0.4 410

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Homework –Text p. 80, #14-38 evens, 44-50 evens, 55 & 56

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