Fast Trick to Multiply Numbers Near 100 Learn this powerful shortcut to multiply numbers close to 100 using the deficit method. Here 97 is 3 less than 100 and 92 is 8 less than 100. Multiply the deficits 3×8 to get 24 and subtract the sum of deficits from 100 to get 89. Final answer becomes 8924. This method saves time in all competitive exams and helps you boost calculation speed instantly. multiplication tricks near 100 deficit method speed maths shortcut for competitive exams fast multiplicat