Vedic / Quicker / Shortcut Math ⇒ Topic : Multiply any number from 8089 by 5

Samual
 
Today we are going to learn another cool trick to multiply any number from 80 to 89 by 5 in seconds. Let us see the steps Step 1: Assume the base as 80 Step 2: Multiply the base by 5 Step 3:Multiply the unit place digit by 5 Step 4:Add the results obtained in step 2 and step 3 to get final answer. Now lets consider a few examples to understand better Example 1: 82 x 5 = ? Step 1:We assume the base as 80. Step 2:Multiplying the base by 5 We get 80 x 5 = 400 Step 3:Multiplying the unit place digit by 5 We get 2 x 5 =10 Step 4:Adding results obtained in step 2 and step 3 We get 400 + 10 = 410 Ans 82 x 5 =410
Example 2: 87 x 5 = ?
Step 1:We assume the base as 80.
Step 2:Multiplying the base by 5 We get 80 x 5 = 400 Step 3:Multiplying the unit place digit by 5 We get 7 x 5 = 35 Step 4:Adding results obtained in step 2 and step 3 We get 400 + 35 = 435 Ans 87 x 5 =435  
 
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