Step 7: Subtracting A Bigger Number From A Smaller

Oh, one last point of interest is when you need to subtract a larger number from a smaller one.

Using either Method, make the larger number the minuend and the smaller one the subtrahend proceed as you would to solve for the difference and then just place a "-" sign in front of your answer. How neat is that.
<p>wowwwwwwww this is an amazing method thanks alot</p>
this is aaaaaaawwwwwwwweeeeeeesssssssooooooommmmmmmeeeeeee it saved my life if there was not this thing i would die by my teacher!!!!!!!!!!!!!!!!!!!!!!!!!!
Everyone out. I have to poop. This is amazing. Why were we not taught this method?
Mostly because of a conspiracy from teachers to stretch the little we need to learn into decades of boring classrooms. LOL <br>North American teaching methods believe the system they taught us is far superior to this European technique. Like-wise with whole word language learning. Don't get me started. LOL <br> <br>
ouch, small typo, um that 29,500 should read 28,500
okay can you help me with subracting 30,000-1,500 i keep getting 38,500 how do you get the 2 in instead of 3. so when you subtract it is left to right or still right to left??
Sure, I can help. (without rereading my instructable, sorta like one hand behind my back.LOL) <br> <br>Your example has 6 zeros and the answer has a few too, so it can get real messy real fast describing it, so I'll do each thought process step by step. You will get the aha! moment along the way. <br> <br>30,000 <br>- 1,500 <br>| | | | |__ think &quot;0 plus 0 gives 0&quot; <br>| | | |_____ think &quot;0 plus 0 gives 0&quot; <br>| | |________think &quot;5 plus 5 gives 10&quot; carry forward the 1 <br>| |___________think &quot;1 plus the carried 1 plus 8 gives 10&quot; carry forward the 1 <br>|______________think &quot;the carried 1 plus 2 gives 3&quot; <br> <br>= 29,500 <br> <br>Working right to left. <br> <br>It becomes a much more valuable technique the more different the digits are. With so many zero's it is easier to do it other ways, I'll admit. <br> <br>Now try it with 34,567 - 8,629 and it becomes just as simple as the above. <br>it quickly becomes <br> <br> 9 + (8) is 17 <br>1 + 2 + (3) is 6 <br>6 + (9) is 15 <br>1 + 8 + (5) is 14 <br>1+(2) is 3 <br> <br>* in the brackets are the answer digits right to left, all the 1's (in this example) are due to carrying forward. <br> <br>Oh, yeah the answer is 25,938 and with practice can easily be done as quick as you could read it. And it never gets more difficult even when the numbers are larger. <br> <br>If you do have the aha! moment..... go try subtracting your phone number from your friends, forget about the dashes; and to avoid identical area code thing (yeah use all 10 digits) write one of the numbers in reverse; and you may as well use the higher first digit as the top number. <br> <br>
Wow, thank you so much for posting this. it is remarkably easy to subtract without paper now. much much better! Thanks!<br /> <div id="refHTML">&nbsp;</div>
Amazing! This is so awesome. I tried it and it works so easily and without any effort. I tried to do some really long problems and i didnt even need to write. Thanks. Im gonna forget the American way! LOL<br />
Could you please explain to me how I would subtract 2000.00-632.84? I keep coming up with the wrong number. Your help would really be appreciated. Thanks :0)
Sorry for the late reply. Just found your question. 2000.00 -632.84 Always work from right to left..... 4 and 6 makes 10 6 is the right most digit. add the 1 of that ten to bring the 8 to be a 9 9 and 1 makes the next 10 1 is the second from right digit keep the decimals point lined up. add the 1 of that ten to bring the 2 to be a 3 3 and 7 makes the next 10 7 is the third from right digit add the 1 of that ten to bring the 3 to be a 4 4 and 6 makes the next 10 6 is the fourth from right digit add the 1 of ten to bring the 6 to be a 7 7 and 3 makes the next 10 3 is the fifth from right digit add the 1 of ten to bring the 0 to be a 1 1 and 1 makes the 2 1 is the sixth from right digit You're answer should then be 1367.16 While it seems awkward at first, after a few tries you'll see it is just as easy as addition. If you are still having difficulty try email egon-1@rogers.com and I have other ways to teach this. What part of Ontario? Hope that helps;)

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