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# 35 78 numerator denominator. Fractions can be written in both fraction and decimal form. Fraction 7 10 10 1 100 100 19 19 100 100 11000 23 231000 471.

## Presentation on theme: "35 78 numerator denominator. Fractions can be written in both fraction and decimal form. Fraction 7 10 10 1 100 100 19 19 100 100 11000 23 231000 471."— Presentation transcript:

35 78 numerator denominator

Fractions can be written in both fraction and decimal form. Fraction 7 10 10 1 100 100 19 19 100 100 11000 23 231000 471 4711000Decimal0.70.010.190.0010.0230.471 One place past the decimal means the number is over 10, 2 places past means over 100, etc.

Using a calculator, write the following fractions as a decimal: 1234 11 11 11 11 What patterns do you see?

Using your pattern from the previous slide, predict the decimal forms of the following fractions: 5678910 11 11 11 11 11 11 Then, use a calculator to check your predictions.

Using a calculator, write the following fractions as decimals and be ready to discuss the patterns you see: 123 9 9 9 Use your patterns to predict the fraction form of these decimals: 0.777 777 777…. 0.888 888 888…. What do you notice about the last digit in the calculator display?

0.1 0.25 A decimal with a definite number of decimal places.

0.333 333 333…0.454 545 454…0.811 111 111… Some digits in each repeating decimal repeat forever. We draw a bar over the digits that repeat. 0.121 212 121 = 0.12 Pizazz C-72

Divide the numerator by the denominator. 6 6 9 = 0.6 9 ÷

Find a number that will divide evenly into BOTH the numerator and denominator. 14 ÷ 14 = 1 84 ÷ 14 6 It is important to keep checking to see if you can reduce the numbers further until you no longer can come up with a whole number. Pizazz C-27 and C-28

Make your denominator (bottom number), equal to 10, 100 or 1 000. Example: 3 = 5 100 x 20 x 20 60 Remember, what ever you do to the denominator you must do the same to the numerator Text page 88 - 90

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