Download presentation
Presentation is loading. Please wait.
Published byPhilippa Fox Modified over 9 years ago
1
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
2
Homework Text p. 77, #1-4 all 1) 500 cans 2) 76 Empire State Buildings 3) 36 black keys 4) 110 Hz
3
Objective SWBAT write fractions as decimals, write decimals as fractions, and determine whether a decimal is terminating or repeating.
4
Terminating decimal a decimal that comes to an end 0.25 0.625-0.98753.2 Section 2-6, “Equivalent Fractions and Decimals”
5
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.
6
F D raction ecimal To convert a fraction to a decimal, divide the numerator by the denominator.
7
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
8
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 -
9
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
10
= 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
11
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.
12
Writing Decimals as Fractions 0.71“seventy-onehundredths” 100 D F 71 71 1 is in the “hundredths” place
13
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
14
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
15
Decimals = Fractions “Part or a portion of the WHOLE” 4 tenths 0.4 410
16
Homework –Text p. 80, #14-38 evens, 44-50 evens, 55 & 56
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.