How to find Multiply number between 11 and 19/ short tricks of multiplication

         This method of solving problem of multiply numbers between 11 and 19 like ......
11×19, 12×15,15×16,19×15,15×15. This type problem solve by this shortcut tricks. There is some steps
Step 1:- Aad the larger number to the right                 most digit of the other number
Step 2:- put a 0 at the end of the step 1
Step 3:- multiply the rightmost digit of both                 original number
Step 4:- add step 2 and step 3

Ex. 18 × 15 = 230
Step 1 :- 18 + 5 = 23
Step 2 :- 23 × 10 = 230
Step 3 :- 8 × 5 = 40
Step 4 :- 230 + 40 = 270

Ex. 18 × 18 = ____
Step 1 :- 18 + 8 = 26
Step 2 :- 26 × 10 = 260
Step 3 :- 8 × 8 = 64
Step 4 :- 260 + 64 = 324

Some problem there is show. So practice this problems




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