Some math can be surprising and unexpected. In our daily life, we can determine which supermarket is offering us cheaper groceries or which is the best route to our schools. It is all about which calculation to use and connecting the dots. Subtraction, addition, multiplication, and division are quite easy, but when it comes to derivation, calculus and geometry, math formulas are needed. Here is a list of basic math formulas:

Average formula

Let x1,x2,x3,……,xn be a set of numbers, average = (x1 + x2 + x3,+……+ xn)/n

Per cent

Per cent to fraction: a% = a/100

Percentage formula: Percentage/base =Rate/100

Consumer math formulas

Discount = discount rate × discount rate

Discount rate = discount ÷ list price

Sale price = list price – discount

Interest = rate of interest × principal × time,

Geometry formulas

Perimeter of a square= 4L, Perimeter of a rectangle = 2(L + W), Perimeter of a triangle = a + b + c

Area of a square=s × s, Area of a rectangle= l × w, Area of a triangle= (b × h)/2, Area of a trapezoid= (b1 + b2) × h/2,

Volume of a cube= s × s ×s, Volume of a box=l × w × h, Volume of a sphere= (4/3) × pi × r3,

The volume of a cylinder= pi × r2 × Height.

References

https://www.basic-mathematics.com/basic-math-formulas.html

https://byjus.com/math-formulas

## Basic Math Formulas You Should Know

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