1. SHORT CUT METHODS OF MATHEMATICS BY Dr. NITIN OKE. Safe Hands, Akola

2. Very elementary & simple things

3. A(B+C) = A.B + A.C (A/B)  (C/D) = (AD  BC)/BD A n x B m =........ A n x B m A n x B n =......... (AxB) n A n x A m =......... A n+m P% of N = (p/100)xN

4. Use of Very elementary & simple things 23x45 + 12x23 + 23x43 ═23 x (45+12+43) ═2300

5. Use of Very elementary & simple things 12x42 + 24x6 + 12x46 ═12x88 + 24x6 ═12x(88+12) ═1200

6. Use of Very elementary & simple things

7. If you want take product by 25, divide by 4 and shift decimal to right by two places 324 x 25 = 81 24036 x 25 = 6009 123 x 25 = 30 75 2487 x 25 = 621 75 Some simple methods of product 00. Also remember 1/4 = 0.25, 2/4 = 0.5 3/4 = 0.75.

8. Some simple methods of division If you want to divide by 25, multiply by 4 and shift decimal to left by two places 324/25 = 12 96 24036/25 = 961 44..