Basic Maths Formulas List

Basic Maths Formulas List

Some of the Basic Math Formulae are listed below:

(1)Adding Fractions

pq+rs=p∗s+r∗qq∗s

(2) Subtracting Fractions

pq–rs=p∗s−r∗qq∗s

(3) Multiplying Fractions

pq∗rs=p∗rq∗s

(4) Dividing Fractions

abcd=a∗db∗c

(5) Proportion Rule:

pq=cd

thenp∗d=q∗c

(6) Percentage to fraction:

x % = x100

BODMAS Rule

BODMAS is a very important rule of mathematics. It is used in the simplification of mathematical expressions and equations involving basic operations of mathematics. BODMAS stands for the bracket, Of, Division, Multiplication, Addition, and Subtraction. It explains the sequence and order of operations to solve the expression.

According to it, if an expression contains brackets ((), {}, []) we have to first solve these brackets followed by “of” i.e. powers, then division, multiplication, addition and subtraction from left to right. The order of brackets for the simplification (), {}, [].

Solved Maths Examples

Q.1:  Find x,   if 15=2x.

Solution: Given, 15=2x

On cross multiplication, we get,

1∗x=2∗5

Thus,  x = 10.

Q.2:  Add the fractions

25+67

Solution: Given,

25and67 as two fractions. On adding them,

25+67

=  2∗7+6∗55∗7

= 4435

Q.3: Simplify:

−2(13+2)÷5+16

Solution:

−2(13+2)÷5+16

We will follow BODMAS rule to perform operations as follows:

Step 1: Simplify the terms inside ( )  to get  13+2  i.e. 15

Step 2: Divide the result by 5 ,    to get 3.

Step 3: Multiply the result by -2 to get -6.

Step-4: Add the result in 16 to get 10.

Thus the final result is 10.