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1) This document contains examples of converting between fractions, decimals, and percentages. Fractions are converted to decimals by dividing the numerator by the denominator. Decimals are converted to percentages by multiplying by 100. Formulas are provided for calculating the average of two numbers and the area of a rectangle. 2) Times are converted between hours/minutes/seconds and decimal formats. Common fractions are converted to mixed numbers and vice versa. Equivalent fractions are calculated by dividing the numerator and denominator by their greatest common factor. 3) Various fractions are listed with their decimal and percentage equivalents to provide examples of different fraction types in multiple formats.
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- 1. 21-22 21-22
- 2. 60 2 5 60 10 24 60 60 5h 25' 30" 5 25 30 60 5 25/60 30/3600 5 4/10 2/100 5/1000 . 1854 82 = 1 4 82 = 1 4 = 1 x 60 + 4 = 64 592 = 58 1 (=58 x 60 + 1 = 3481)
- 3. a b a.b = ((a+b)2- a2-b2)/2 - -> a.b = (a+b)2/4 - (a-b)2/4 5.3 (64/4) - 4/4 = 15 a/b = a.(1/b) b 2 30 3 20
- 4. 4 15 5 12 6 10 8 7 30 9 6 40 10 6 12 5 15 4 16 3 45 18 3 0 20 3 24 2 30 25 2 24 27 2 13 20 2/3 = 2.(1/3) = 2.(20/60) = 40/60 40 1 60 60