**Simplification** is the easy topic. **Simplification** play an important role in Banking,SSC and other competitive examination. In IBPS PO/Clerk, SBI PO/Clerk, RBI it play an important role, in an Aptitude Section there are 10-15 questions will be asked from **Simplification and Approximation**. Here you will find best simplification technique through BODMAS rule.

**BODMAS Rules**

The **BODMAS** acronym is for:

**B**rackets (parts of a calculation inside brackets always come first) (()).**O**rders (numbers involving powers or square roots).**D**ivision (/).**M**ultiplication (*).**A**ddition (+).**S**ubtraction (-).

Here is an example, to help you understand the **BODMAS** rule concept.

### EXAMPLE

What will come in place of question mark (?) in the following question?

** Q1. (1280 + 3360) / ? = 330**

- 14.
- 18.
- 25.
- 21.

**Ans (1)**

According to the **BODMAS**, first we need to solve the Brackets.

Here are the steps to illuminate this process.

(1280 + 3360) / ? = 330

4640/ ? = 330

4640/330 =** 14**

** Q2. 78 – [5 + 3 of (25 – 2 × 10)]**

- 56
- 59
- 62
- 58

**Ans (4)**

Here are the steps to illuminate this process.

78 – [5 + 3 of (25 – 2 × 10)]

= 78 – [5 + 3 of (25 – 20)], (Simplifying ‘**multiplication**’ 2 × 10 = 20)

= 78 – [5 + 3 of 5], (Simplifying ‘**subtraction**’ 25 – 20 = 5)

= 78 – [5 + 3 × 5], (Simplifying ‘**of**’)

= 78 – [5 + 15], (Simplifying ‘**multiplication**’ 3 × 5 = 15)

= 78 – 20, (Simplifying ‘**addition**’ 5 + 15 = 20)

= 58, (Simplifying ‘**subtraction**’ 78 – 20 = 58)

=58.

#### MULTIPLICATION TECHNIQUES – Learn Dunia

**Types of Numbers**

**Natural Numbers:**Counting Numbers are called Natural Numbers i.e 1,2,3…. are**Natural Numbers.****Whole Numbers:**All Counting Numbers together with zero (0) are called**Whole Numbers.****Integer Numbers:****Integer Numbers i.e- …….-3,-2,-1,0,+1,+2,+3……****Even Numbers:****Even Numbers. i.e- 0,2,4,6,8…**are Even Numbers.**Odd Numbers:**Numbers which is not divisible by 2 known as**Odd Numbers . i.e- 1,3,5,7…**are Odd Numbers.**Prime Numbers:**Numbers which is divisible by itself and by 1 (one ) known as**Prime Numbers.****Composite Numbers:****Composite Numbers.**

**Important Algebraic Formulas:**

### Simplify** the following questions-**

- 6 x .6 x. 6 ?

3.

4. A Board 7 ft. 9 inch long is divided into 3 equal parts. what is the length of each equal parts?

5. 7500 + (1250 /50) = ?

6. (1/11)1111011 = ?

7.

8. The value of 0.2 + 0.2 – 0.2 / 0.2 x (0.2 x 0.2) is ?

9. The value of 5.8 x 2.5 + .6 x 6.75 + 139.25 is ?

10. The value of 152.416 / 18.72 / 6.28 is

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