Decimals+and+Percentages

% are always out of 100 We use a % sign Percentages can be converted to decimals and fractions easily:
 * Percentages**
 * Changing a dec to a %: multiply by 100
 * Changing a percentage to a fraction: put the % over 100, then simplify if necessary
 * Changing a percentage to a dec: just multiply by 100
 * Changing a fraction to a dec: just divide the top number by the bottom number (in your calculator)
 * Changing a dec to a frac: check what column the last digit is in and put it over that number Eg: 0.35, the 5 is in the 100th column so we write 35/100 (then simplify to 7/20)
 * Changing a frac to %: change frac to a dec, then multiply it by 100

Example: Shoes are marked as $180, but they are in a 30% off sale. What is the new price of the shoes? In your calculator you would enter: 30 ÷ 100 x 180 = __. Then you would subtract that percentage from $180. The shoes will cost $180-$54 = $126

Example 2: Find 10% by moving the decimal point left one place – 10% of $180 is $18 So, 30% of 180 is ($18 x 3) $54

Try to fill out the table below:
 * Decimal || Fraction || Percentage ||
 * 0.5 || ½ || 50% ||
 * || 1/4 || 25% ||
 * 0.2 ||  || 20% ||
 * 0.3 ||  ||   ||
 * 0.4 ||  || 40% ||
 * ||  || 10% ||
 * 0.05 || 1/20 || 5% ||
 * 0.03 ||  ||   ||
 * ||  || 150% ||
 * 0.35 ||  ||   ||
 * || 67/100 ||  ||
 * || 1/8 ||  ||
 * || 1/3 ||  ||
 * 0.125 ||  ||   ||
 * || 3/8 ||  ||