Bell Work: Divide without using a calculator   6 12

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Presentation transcript:

Bell Work: Divide without using a calculator. 1. 36  3 2. 144  6 12 1. 36  3 2. 144  6 12 24 False 3. T/F? The denominator of ¾ is 3? 4. Change to a mixed number: 33/8 4 1/8

Learning Target: I can Simplify fractions Write decimals as fractions

Vocabulary rational number relatively prime terminates repeats - any number that can be written as a fraction - any number that terminates or repeats terminates repeats - two numbers whose only shared factors are 1 - a fraction that can’t be reduced

I can simplify fractions Let me show you one: Find a number that will divide evenly into both 16 80 How about 8? = 16 ÷ 8 80 ÷ 8 Divide the numerator and denominator by 8. 16 80 2 10 = 2 ÷ 2 10 ÷ 2 Do you need to reduce more? 1 5 =

I can simplify fractions Try this one with your partner: –18 29 18 = 2 • 9 29 = 1 • 29 ;There are no common factors. –18 29 = –18 29 18 and 29 are relatively prime.

I can simplify fractions Try this by yourself: 18 27 9 is a common factor. 18 27 = 18 ÷ 9 27 ÷ 9 Divide the numerator and denominator by 9. 2 3 =

I can write decimals as fractions Steps: 1. Write a fraction. Use the numbers after the decimal as the numerator. 2. Count the number of places AFTER the decimal. This will be the number of zeros in the denominator. 3. Put a 1 in front of the zeros 4. Simplify the fraction

I can write decimals as fractions Let me show you two examples: A. 5.37 37 100 = 5 5.37 7 is in the hundredths place. B. 0.622 622 1000 = 2 is in the thousandths place. 0.622 Simplify by dividing by the common factor 2. = 311 500

I can write decimals as fractions Try these with your partner: A. 8.75 75 100 = 8 8.75 5 is in the hundredths place. Simplify by dividing by the common factor 25. = 8 3 4 B. 0.2625 2625 10,000 = 5 is in the ten-thousandths place. 0.2625 = 21 80 Simplify by dividing by the common factor 125.

Have you mastered today’s learning targets? Then, prove it with this four question quiz!

Lesson Quiz Simplify. 18 42 3 7 15 21 5 7 1. 2. Write each decimal as a fraction in simplest form. 27 100 – 5 8 3. 0.27 4. –0.625

Use your calculator only for emergencies and to check your work. Assignment: page 8, problems 1 – 18 Use your calculator only for emergencies and to check your work.