Quicker Maths
12Aug/092

Quant Gyan of the day

Some tricks for faster calculation:

1. Multiplying 5 times an even number: halve the number you are multiplying by and place a zero after the number.

Example:

i. 5 * 136, half of 136 is 68, add a zero for an answer of 680.

ii. 5 * 874, half of 874 is 437; add a zero for an answer of 4370.

2. Multiplying 5 times an odd number: subtract one from the number you are multiplying, then halve that number and place a 5 after the resulting number.

Example:

i. 343 * 5 =(343-1)/2 | 5 = 1715 .

For latest CAT syllabus click here.

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Filed under: Speedy Calculation Leave a comment
Comments (2) Trackbacks (0)
  1. Fred
    November 27th, 2011 - 04:20

    Cool math trick. I will send this to my bro who is taking a bunch of math classes now.

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I am Vineet Patawari - PGDM (IIM Indore), ACA, B.Com(H). My passion for Mathematics, specially Vedic Maths encouraged me to start QuickerMaths

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