Simplification
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1. BODMAS (The Golden Rule)
B
O
D
M
A
S
Always solve from Left to Right for same-level operations (Division/Multiplication or Addition/Subtraction).
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2. Fractional Shortcuts
12.5%
1/8
16⅔%
1/6
33⅓%
1/3
37.5%
3/8
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3. Index Law (Mains Hack)
Multiplication
$$ a^m \times a^n = a^{m+n} $$
Division
$$ \frac{a^m}{a^n} = a^{m-n} $$
🌟 Topper's Mindset
1
Unit Digit Check: If $?^2$ ends in 1, the answer must end in 1 or 9.
2
Approximation: For questions, treat 44.98% as 45% and 11.01 as 11.
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Practise this topic
203 questions in this topic. Each quiz draws 10, marked as in the Prelims, with explanations.