Vedic / Quicker / Shortcut Math ⇒ Topic : Multiply any number from 2029 by 5

Lalan
 
Today we are going to learn another cool trick to multiply any number from 20 to 29 by 5 in seconds. Let us see the steps Step 1: Assume the base as 20 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 Now lets consider a few examples to understand better Example 1:21 x 5 = ? Step 1:We assume the base as 20. Step 2:Multiplying the base by 5 We get 20 x 5 = 100 Step 3:Multiplying the unit place digit by 5 We get 1 x 5 = 5 Step 4:Adding results obtained in step 2 and step 3 We get 100 + 5 = 105 Ans 21 x 5 = 105 Example 2:26 x 5 = ? Step 1:We assume the base as 20. Step 2:Multiplying the base by 5 We get 20 x 5 = 100 Step 3:Multiplying the unit place digit by 5 We get 6 x 5 = 30 Step 4:Adding results obtained in step 2 and step 3 We get 100 + 30 = 130 Ans 26 x 5 = 130  
 
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