Speed Maths Ch 13: Fast Squaring Near Base (Saare Posts)

Square matlab number ko usi number se multiply (97² = 97 × 97). Jo number base (10, 100, 1000) ke paas ho, uska square Chapter 7–8 ke base method se do chhote parts mein: left mein number se utna hi subtract karo ya add karo jitna woh base se door hai, right mein distance ka square (97²: 3 kam → 94 | 09 → 9409). Base se upar (104² = 10816), 1000 ke paas (996² = 992016), right part ke boxes aur carry, kaunsi trick kab (Chapter 6 ya base), aur tiles ke chitra se yeh kyun chalta hai. Har post mein timer, diagram, drill, MCQs aur Challenge.