Core ConceptRead 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 ExampleSolve this step-by-step before moving on
Addition left to right: 6 + 18 + 2 = 26
Final Answer: 26
Another
ShortcutsUse these to save 30–60 seconds per question
When dealing with fractions, treat the numerator and denominator as separate BODMAS problems. Solve each completely, then divide.
Exam TrapsCommon mistakes students make — avoid these
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.
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
44graded MCQs · easy to hard · full solution & trap analysis · showing 20 of 44