TECH-072
6 - Squares, Square Roots, Cubes & Cube Roots (14 Techniques)
Target: 5s
Squaring Numbers Near 1000
$(1000 \\pm x)^2 = (1000 \\pm 2x) \\mid \\text{3-digit } x^2$.
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Relevant Entrance Exams
JEE_MAIN
CET
SSC
Prerequisites
Common Student Traps
- •Applying shortcut when boundary assumptions fail
- •Mental arithmetic carrying slip under time pressure
Sponsored Learning Partner
Supporting free calculation training for competitive exam aspirants.