TEAS Math Formulas

Flashcards for TEAS Math Formulas Review

Area of a triangle

A = 1/2 * b * h

Area of a square

A = l^2

Area of a rectangle

A = l * w

Area of a parallelogram

A = b * h

Area of a trapezoid

A = 1/2 * (b1 + b2) * h

Area of a circle

A = πr^2

Area of a rhombus

A = 1/2 * (d1 * d2)

Area of an ellipse

A = πab

Volume of a rectangular prism

V = l * w * h

Volume of a cube

V = s^3

Volume of a cylinder

V = πr^2h

Volume of a triangular prism

V = 1/2 * b * h * l

Volume of a cone

V = 1/3 * πr^2h

Volume of a rectangular pyramid

V = 1/3 * l * w * h

Volume of a Sphere

V = 4/3 * πr^3

Perimeter

The sum of all sides of a shape

Circumference

The distance around a circle (C=2πr)

Pythagorean Theorem

a^2 + b^2 = c^2

Apex

The highest point of a shape, opposite from the base

Base

The face of a shape perpendicular to the direction height is measured

How many inches are in 1 foot?

1 ft = 12 in

How many centimeters are in one inch?

1 inch = 2.54 cm

How many feet are in one yard?

1 yd = 3 ft

How many feet are in a meter? How about yards?

1m = 3.28 ft = 1.09 yd

How many feet are in a mile? How about kilometers?

1 mi = 5,280 ft = 1.61 km

How many grams are in one ounce?

1 oz = 28.35 g

How many ounces are in one cup?

1 cup = 8 oz

How many cups are in one pint?

1 pint = 2 cups

How many pints are in one quart?

2 pints = 1 quart

How many quarts are in one gallon?

4 quarts = 1 gallon

1 gallon is how many liters?

1 gallon = 3.8 liters

1 pound is how many ounces?

1 pint = 16 ounces

1 kilogram is how many pounds? How about ounces?

1 kg = 2.2 lb = 35.27 oz

1 ton is how many ponds and kilograms?

1 t = 2,000 lb =907.19 kg

°F

(9/5) (°C) + 32

°C

(5/9) (°F) – 32

What is the Mean?

Average. Add all the numbers and divide by how many there are.

What is the Median?

Middle

What is the Mode?

Most common/frequent

What is the Range?

Distance between smallest and largest (largest - smallest)

What is Slope (m) in y=mx+b?

rise/run or (y2 - y1) / (x2 - x1)

What is b in y=mx+b?

y-intercept

Percent Increase

(new value – original value) / original value × 100

Percent Decrease

(original value – new value) / original value × 100

Percent to Fraction/Decimal

Percentage / 100

Decimal to Fraction

decimal × (10^n) / (10^n)

Decimal to Percent

decimal × 100

Fraction to Decimal

numerator / denominator

Fraction to Percent

(numerator / denominator) × 100

kilo

0.001

hecto

0.01

deca

0.1

base

1.0

deci

10.0

centi

100.0

milli

1,000.0

Linear Equations

ax + b = c

Quadratic Equations

ax^2 + bx + c = 0

x–b± √(b^2 – 4ac) / 2a

Inequalities

ax + b < c , ax + b > c , ax + b ≤ c , ax + b ≥ c