ZestExam

RRB Group D BODMAS

Study Material · Concept Notes · Shortcuts

This page covers RRB Group D BODMAS with complete concept notes, 3 graded practice MCQs, key points and exam-specific tips. Free to study.

0 PYQs

none yet

3 Practice

MCQs

8 Key Points

to remember

Free

no login needed

Take Free Mock →

Also for:NTPC ALP JE Tech

PYQs

0

Practice

3

Key Points

8

Access

Free

Concept Notes

BODMAS— Rules & Concept

💡

Core Concept

Read this first — the foundation of the topic

💡Key Rules

Division and Multiplication have equal priority - solve whichever comes first from left to right. Same applies to Addition and Subtraction. Always complete one bracket fully before moving to the next. When you have nested brackets, solve the innermost bracket first

🔑Formula Sequence

B → O → DM (left to right) → AS (left to right) SSC CGL regularly tests BODMAS in 2-3 questions per paper

📋Common patterns include

Complex expressions with all operations mixed together. Nested brackets with multiple levels. Fraction expressions requiring BODMAS application. Word problems disguised as BODMAS questions.

Questions with deliberate traps to test if you know the correct sequence

⚡Powerful Shortcut

Use the BRACKET-FIRST technique. When you see a complex expression, immediately identify and mark all brackets with different colors or underlines. Solve the deepest nested bracket first, then work outward. This prevents confusion and saves time.

✏️

Worked Example

Solve this step-by-step before moving on

1

Step 1

Handle Brackets first. Inside bracket: 15 - 3² = 15 - 9 = 6

2

Step 2

Expression becomes 48 ÷ 8 + 3 × 6 + 2

3

Step 3

Division first (left to right): 48 ÷ 8 = 6

4

Step 4

Expression becomes 6 + 3 × 6 + 2

5

Step 5

Multiplication next: 3 × 6 = 18

6

Step 6

Expression becomes 6 + 18 + 2

7

Step 7

Addition left to right: 6 + 18 + 2 = 26 Final Answer: 26 Another Time-Saving Trick: When dealing with fractions, treat the numerator and denominator as separate BODMAS problems. Solve each completely, then divide. Common Mistake: Students often solve operations left to right without following BODMAS priority. For example, in 2 + 3 × 4, wrong approach gives (2 + 3) × 4 = 20, but correct BODMAS gives 2 + (3 × 4) = 14. Another trap is forgetting that Division and Multiplication are equal priority, same with Addition and Subtraction.

Test BODMAS under exam conditions

Free RRB Group D mock · instant rank · no login

Free Mock →

Key Points to Remember

BODMAS stands for Brackets, Orders, Division, Multiplication, Addition, Subtraction
Division and Multiplication have equal priority - solve left to right
Addition and Subtraction have equal priority - solve left to right
Always solve brackets first, starting with innermost nested brackets
Orders include squares, cubes, square roots, and all indices
Apply BODMAS to both numerator and denominator separately in fractions
Left to right rule applies only within operations of same priority
Complete one bracket entirely before moving to operations outside it

Exam-Specific Tips

BODMAS sequence is: Brackets → Orders → Division/Multiplication → Addition/Subtraction
Division and Multiplication are solved left to right with equal priority
Addition and Subtraction are solved left to right with equal priority
Square root symbol acts as both bracket and order operation
In nested brackets, innermost bracket is solved first
Powers/indices are solved before multiplication even when multiplication appears first
Fraction bar acts as a grouping symbol like brackets

Practice MCQs

BODMAS — Practice Questions

3graded MCQs · easy to hard · full solution & trap analysis

All MCQs →

Practice 1easy

Simplify: 48 ÷ 6 + 12 × 2 − 5

Practice 2medium

Simplify: 144 ÷ 12 + 8 × 3 − 5 + 2

Practice 3hard

Simplify: 144 ÷ 12 + 8 × 3 − 5 + 2³ ÷ 4 × 6

60-Second Revision — BODMAS

Remember: B-O-DM-AS sequence with left-to-right for equal priorities
Trap: Division and Multiplication are equal - don't always do division first
Technique: Mark all brackets first, solve innermost to outermost
Formula: Treat fraction numerator and denominator as separate BODMAS problems
Shortcut: Complete each bracket fully before moving outside
Warning: Addition and Subtraction are equal priority - solve left to right

Studied the notes? Now test yourself

See how BODMAS appears in the real RRB Group D paper

Full timed mock · Instant All-India percentile · Free

Start Free Mock →Practice Panel

✓ Free forever for basic prep✓ No app download✓ Real exam-pattern questions✓ 12,000+ aspirants