Basic Algebra 1.1 (1.1.2) Fraction decimal ang percentage.pptx

Fraction, decimal, percents

1. 1 ¼ 25%

2. Session Outcomes: To simplify the answer from fraction to percentage. To simplify the answer from percentage to fraction. 2

3. What are fractions, decimals,and percents ? Fractions and percents are different ways of representing part of a whole . We could say 50% of something, or ½. These are all the same quantity . 3

4. What are fractions? A fraction describes part of a whole when the whole is cut into equal parts. This circle has been cut into four equal parts . These equal parts are called fourths . A fourth is written as : ¼ The three red sections equal three fourths, which would be written as: ¾ 4     ¼

5. Fractions Fractions can be converted into other forms… 5 Percents

6. Same Value Different Forms A same value can be written in different forms . For example : ½ fraction 50 % percent

7. Convert a fraction into a percentage 7 Multiply the fraction by 100: ½ x 100 = 50%

8. Convert a percentage into a fraction 8 Percent to convert = 50% Divide 50 (numerator ) ÷ 100 (denominator ) 3. Answer = ½ 50% is equivalent to 1/2

9. 9 50 out of 100 squares are shaded. 50% or 50/100 ( which reduces to ½ )

10. 10 HINTS Fraction to a percent = Multiple the fraction by 100 Percent to a fraction = Divide the numerator (top) by the denominator (bottom ) FRACTIONS PERCENTS 3/4 75% 2/8 25 % 50% 30% 40% 3/6 3/10 2/5