Hesi A2 Math formulas, conversions 2022/2023

How to convert a fraction to percent? - Answer - Divide the top of the fraction by the bottom, multiply by 100 & add % sign. Ex. 2/3 = 66.7% How to convert a percent to fraction? - Answer - Step 1: Write down the percent divided by 100 like this: percent/100 Step 2: If the percent is not a whole number, then multiply both top and bottom by 10 for every number after the decimal point. (For example, if there is one number after the decimal, then use 10, if there are two then use 100, etc.) Step 3: Simplify (or reduce) the fraction Ex. 75% = 75/100 = 15/20 = 3/4 Convert 62.5% to a fraction - Answer - Ex. Step 1: write down. 62.5% = 62.5/100 Step 2: multiply both top & bottom by 10. = 62.5/100 *10 = 625/1000 Step 3: Simplify the fraction. 625/1000 Divided by 25 = 25/40 can go lower if divided by 5 which = 5/8 A sample contains 2/3 oz. of liquid. How many milliliters (mL) is this? - Answer - To convert oz. to mL, multiply by 30 oz./mL. 2/3 * 30 = 60/3 = 20 Instructions require you to dilute a powder in 3 quarts of water. You only have a container that is marked in liters. How many liters would you use to dilute the powder? - Answer - 1 Quart = 32 oz Therefore, 3 Quarts = 96oz. There are 30 milliliters per oz., so 96 oz. = 2,880 milliliters There are 1000 milliliters per liter, so 2,880 mL = 2.88 Liters Or 1 Quart = 0.946 Liter *3= 2.838 = 2.88 L 35% to fraction - Answer - 35/100 = 7/20 0.7/10 = N/100 - Answer - cross multiply = 10N/70=7 or =0.7*100/10 = 0.7*10 = 7 1 inch = - Answer - 2.54 centimeters 1 foot = - Answer - 30.48 centimeters or 0.3048 meters