TEAS Math Review

Percent increase equation

new - old / old * 100

how many ounces in a cup?

8 ounces

How many grams in an ounce?

28.35

How many quarts in a gallon?

4 quarts in a gallon

How many pints in a quart?

2 pints in a quart

How many ounces in a pound?

16 ounces in a pound

How many feet in a yard?

3 feet in a yard

How many inches in a foot?

12 inches in a foot (think hoagie)

How many liters in a gallon?

3.8 L in a gallon

Equation for Fahrenheit to Celsius

C = 5/9 (F) - 32

Equation for Celsius to Fahrenheit

F = 9/5(C) + 32

Percent Decrease

old - new / old * 100

Area of parallelogram

A=bh

Area of triangle

A = 1/2bh

Area of circle

A = (pi * r)²

You can differentiate this from circumference because of the squared.

Circumference of a circle

2 pi r

Drops per minute equation

Flow rate = Total Volume (mL) x Drop Factor (gtt/mL) / time in minutes

On the TEAS, always double-check whether the question asks about an infusion pump mL/hr or gravity tubing ggtt/min, so you know whether to ignore or look for that drop factor!

Electronic infusion rate

volume / time

Note that all these intravenous calculations are over time, which makes sense given the context.

total volume for intravenous calc

rate x time

convert 5 mL to dL

Since 1 deciliter (dL) = 100 milliliters (mL), converting 5 mL to dL requires dividing by 100: 5 mL ÷ 100 = 0.05 dL.

equation for volume of a cylinder

pi x (r squared) x h

Basically just circle with a base.

Surface area of a rectangular prism

2(lw + lh + wh). Basically finding the area of all 6 faces and add them together.

desired dose formula (can use for some of those weird dosage ratio problems)

desired dose / dose on hand x volume