📘 MATHS⚡ Speed MathsLevel 3 · Squares, Roots aur DivisionChapter 144 Posts
Square Root Estimation 🌱
Square root (√) matlab reverse square: √49 = 7, kyunki 7 × 7 = 49. Perfect squares ki list (1² se 20²), round numbers mein zero half (√3600 = 60), 4-digit perfect square ka root last digit aur ek 5 wale square se (√2209 = 47), aur jo perfect square nahi unka estimate: kin do squares ke beech, sabse paas whole number, aur ek decimal tak (√50 ≈ 7.1). Har post mein timer, diagram, drill, MCQs aur Challenge.
🌱 Naye ho? Pehle Ch 1 se Ch 13 tak order se padho, phir yahan 14.1 se shuru karo. (Ch 9 abhi nahi aaya hai; use chhod kar padho.)
14.1
Square Root Kya Hai: Reverse Square Aur Perfect Squares
√ ka matlab: 7 × 7 = 49, to √49 = 7. 1² se 20² ki list aur 30², 40² jaise round square
Padho →
14.2
Last-Digit Rule: Perfect Square Ka Square Root (√2209)
Last digit se ikai, left part se dahai, 45² se decision: √2209 = 47, √7744 = 88
Padho →
14.3
Square Root Ka Estimate: Kin Do Squares Ke Beech? (√50, √200)
√50: 49 aur 64 ke beech, 7 ke paas; half (7.5²) se check aur ek decimal tak estimate
Padho →
14.4
Square Root Ke Tricky Sawaal
Soch wale mushkil sawaal: 14.1–14.3 ka mix, perfect square hai ya nahi, area se kinaara (1764 square metre, chess board) aur dhokhe
Padho →
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