Checking of Calculations: Casting Out Nines

<div dir="ltr" style="text-align: left;" trbidi="on"> <span class="Apple-style-span" style="color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px;"><span class="Apple-style-span" style="font-size: small;"><br /></span></span> <span class="Apple-style-span" style="color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px;"><span class="Apple-style-span" style="font-size: small;"><br /></span></span> <span class="Apple-style-span" style="color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px;"><span class="Apple-style-span" style="font-size: small;"><br /></span></span> <span class="Apple-style-span" style="color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px;"><span class="Apple-style-span" style="font-size: small;">While doing arithmetic calculations, we should normally check our calculation. But the checking </span></span><br /> <span class="Apple-style-span" style="color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px;"><span class="Apple-style-span" style="font-size: small;">should not be as tedious as the original problem. To solve this problem I am explaining below a very frequently used method which is discussed in Vedic Mathematics as well as by many other mathematicians. Related posts:</span></span><br /> <span class="Apple-style-span" style="color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px;"><span class="Apple-style-span" style="font-size: small;"><br /></span></span> <span class="Apple-style-span" style="color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px;"><span class="Apple-style-span" style="font-size: small;"></span></span><br /> <ol style="clear: both; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 13px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"> <li style="clear: both; color: #333333; font-family: Arial, Helvetica, sans-serif; line-height: 13px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left; text-indent: 0px;"><span class="Apple-style-span" style="font-size: small;">No More Carrying Over</span></li> <li style="clear: both; color: #333333; font-family: Arial, Helvetica, sans-serif; line-height: 13px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left; text-indent: 0px;"><span class="Apple-style-span" style="font-size: small;">Quickly Multiply by 21</span></li> <li style="clear: both; color: #333333; font-family: Arial, Helvetica, sans-serif; line-height: 13px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left; text-indent: 0px;"><a href="http://www.quickermaths.com/vedic-multiplication-by-11/" rel="bookmark" style="clear: both; color: #333333; font-family: Arial, Helvetica, sans-serif; line-height: 13px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left; text-decoration: none;" target="_blank" title="Permanent Link: Vedic Multiplication by 11"><span class="Apple-style-span" style="font-size: small;">Vedic Multiplication by 11</span></a></li> </ol> <br /></div>

Checking of Calculations: Casting Out Nines

While doing arithmetic calculations, we should normally check our calculation. But the checking  should not be as tedious as the origin...

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