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Mathematics - Numbers and Number System (Form I)
Muhtasari / Summary: Number types, BODMAS, HCF, LCM, primes, and standard form.
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Types of numbers: Natural (1,2,3…), Whole (0,1,2,3…), Integers (…-2,-1,0,1,2…), Rational (p/q where q≠0), Irrational (π, √2), Real (all above). BODMAS/PEMDAS: Brackets → Orders (powers/roots) → Division → Multiplication → Addition → Subtraction. Factors and Multiples: HCF (Highest Common Factor), LCM (Lowest Common Multiple). Prime numbers have exactly two factors: 1 and themselves. Standard form: a × 10ⁿ where 1 ≤ a < 10.