Hesi A2 Math formulas, conversions
100% pass
How to convert a fraction to percent? ✔✔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?
...
Hesi A2 Math formulas, conversions
100% pass
How to convert a fraction to percent? ✔✔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? ✔✔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 ✔✔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? ✔✔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? ✔✔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 ✔✔35/100 = 7/20
0.7/10 = N/100 ✔✔cross multiply = 10N/70=7
or =0.7*100/10 = 0.7*10 = 7
1 inch = ✔✔2.54 centimeters
1 foot = ✔✔30.48 centimeters or 0.3048 meters
1 yard = ✔✔0.914 meters
1 mile = ✔✔1.609 kilometers
1 ounce = ✔✔28.350 grams
1 pound = ✔✔454 grams or .454 kilograms
1 fluid ounce = ✔✔29.57 milliliters
1 Quart = ✔✔0.946 liters
1 Gallon = ✔✔3.785 liters
1 Foot = ✔✔12 inches
1 Yard = ✔✔3 feet
1 Mile = ✔✔5280 feet
1 Kilometer = ✔✔1000 Meters
1 Meter = ✔✔100 Centimeters
1 Centimeter = ✔✔10 Millimeters
1 Liter = ✔✔1000 Milliliters
1 Gallon = ✔✔4 Quarts
1 Gallon is = ✔✔128 Fluid ounces
1 Quart is = ✔✔2 Pints
1 Pint = ✔✔2 Cups
1 Cup = ✔✔8 Fluid ounces
1 Kilogram = ✔✔100 Grams
1 Gram = ✔✔1000 Milligrams
1 Ton = ✔✔2000 pounds
1 Pound = ✔✔8 ounces
Gallon Man ✔✔
How many millimeters are in a centimeter? ✔✔10 mm
10 kilograms is equivalent to how many pounds? ✔✔-to convert kilograms to pounds, multiply
2.2 lbs/kilo.
10 * 2.2 = 22
How to convert Celsius to Fahrenheit? ✔✔-Multiply by 1.8 & add 32.
Ex. 30 Celsius * 1.8 + 32 = 86 Fahrenheit
what is the reciprocal of 6? ✔✔6/1 = 1/6
In class the ratio of males to females is 4:5. If there are 36 total students, how many females are
in the class? ✔✔Males= 4
Females= 5
Total= 9
How many times does 9 go into 36? 4.
so multiply 4 by each male, female, and total.
male= 4*4= 16
female= 5*4= 20
total= 9*4= 36
A roast was cooked at 325 Fahrenheit in the oven for 4 hours. The internal temp. rose from 32
Fahrenheit to 145 Fahrenheit. What was the average rise in temperature per hour? ✔✔temp./hr =
(145-32)Fahrenheit/4hrs. = 113F/4hrs = 28.25 F/hr
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