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Short Trick to Multiply 2 digits & 3 digits Numbers – 7tricks

Short Trick to Multiply 2 digit & 3 digit Numbers

 1. Short Trick to multiply 2 digit numbers:-

In this trick, we learn about ‘How to multiply two-digit numbers quickly’

(i) AB × CD = AC / AD + BC / BD

Let A, B, C, D are 4 different numbers then for multiplying AB x CD is equal to multiplication of A & D slash multiplication of A & D and then add this in the multiplication of B & C slash multiplication of B & D. 
Let’s Take an example–>

Ex. 35 × 47 

 = 12 / 21 + 20 / 35 

 = 12 / 41 / 35 

 = 1645 

[For solving this slash what you have to do is, simply write 5 then add that 3 in the next part then write 4 (1+3) and then add 4 in the next part that will be 16 then]

(ii) AB × AC = A2 / A (B + C) / BC 

If question have first digit same in both numbers that we have to multiply. then solve by this formula!

Ex. 74 × 76 

 = 72 / 7(4 + 6) / 4 × 6  

 = 49 / 70 / 24  

 = 5624 

(iii) AB × CC = AC / (A + B)C / BC

Ex. = 35 × 44 

 = 3×4 / (3+5) × 4 / 5×4 

 = 12 / 32 / 20 

 = 1540


2. Short Trick to multiply 3 digit numbers:- 

Let, the question given like that ABC × DEF (Here, A, B, C, D, E, F are integers ) then for solving these type of multiplication fast use this formula-

ABC × DEF = AD / AE + BD / AF + BE + CD / BF + CE / CF

Let’s take an example for this—> 

Ex. 456 × 234 

= 4×2 /4×3 + 5×2/4×4 + 5×3 + 6×2/5×4 + 6×3/6×4 

= 8/12 + 10/16 + 15 + 12/20 + 18/24 

= 8/22/43/38/24 

= 106704


Hope you understood the trick!

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