tag:blogger.com,1999:blog-6299578764487881408.post5818679439693966027..comments2023-08-09T04:26:24.037-06:00Comments on Pinstrosity: Multiplication Pin ExplainedMarquettehttp://www.blogger.com/profile/09112633611070405863noreply@blogger.comBlogger17125tag:blogger.com,1999:blog-6299578764487881408.post-16797710927648447312015-11-25T08:02:52.854-07:002015-11-25T08:02:52.854-07:00I don't know what this method is called, when ...I don't know what this method is called, when I found the pin with this it didn't have any name attached to it. Marquettehttps://www.blogger.com/profile/09112633611070405863noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-40765060745685463972015-11-25T01:24:14.508-07:002015-11-25T01:24:14.508-07:00whats the real name of the method you are using ? ...whats the real name of the method you are using ? plss <br />Anonymoushttps://www.blogger.com/profile/07652100064167373220noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-2610143396710252642014-10-24T21:27:59.927-06:002014-10-24T21:27:59.927-06:00I am very thankful calculator has been invented.I am very thankful calculator has been invented.Anonymoushttps://www.blogger.com/profile/18079713829618274444noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-8449249326978837932014-06-12T13:36:53.517-06:002014-06-12T13:36:53.517-06:00Do you understand how much this could help those w...Do you understand how much this could help those with visual processing disorders? AH! I'm so excited to have found this and I'm going to try it and use it in the kids I tutor as well as show it to the school board to see if we can use it as an alternative for those with special needs. I am also thinking of how great it would be to use pipe cleaners to give them a way of manipulating it until they "grasp" the idea and can move forward with the "traditional" column math style. Thank you so much!Anonymoushttps://www.blogger.com/profile/13055267087120731101noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-1816738915253503852013-10-10T07:23:50.925-06:002013-10-10T07:23:50.925-06:00This is great! I'm going to show it to my 10 y...This is great! I'm going to show it to my 10 year old niece that has petite mal epilepsy. She has a hard time in school and I really think this is going to help her! Thank you so much for sharing this Anonymoushttps://www.blogger.com/profile/07173429210405195102noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-50959496840668570542013-09-16T22:47:55.591-06:002013-09-16T22:47:55.591-06:00However 568x586=/=343396 it equals 332,848. I trie...However 568x586=/=343396 it equals 332,848. I tried it using the method shown on this page and first got 3,329,048. Then i went back and checked my numbers and realized i miss counted some of the intersections, I think its easier to count the lines that are about to intersect vertically and horizontally then multiply as opposed to counting the intersections themselves which can be difficult when you get higher up.<br /><br />Anyway i got it right using the same way as for the smaller problems. I found it helpful to number what digit place each grouping is after you count all the intersections. For example in this problem the furthest right number is 48 so i numbered 8 as the first digit and 4 as going to be the second digit in the answer. Anyways i still got it to work.<br /><br />Thankyou for teaching me this wonderful method, I'm a college student currently and am taking some applied calculus classes. I found it as a helpful more fun method, maybe just because its new. Also i found it funny some people said they liked the multiplying columns method easier. Well i tried to do that method for 212x121 and realized i dont remember how to do it anymore. i realize that may sound silly but i rarely dont use a calculator anymore and now i have this method i may not return to the columns, anyway thanks again for taking the time to teach me this.Anonymoushttps://www.blogger.com/profile/01466240353130617305noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-17380948564164826022013-09-11T10:38:06.775-06:002013-09-11T10:38:06.775-06:00Umm, not for me. I learned the old school way and ...Umm, not for me. I learned the old school way and that's how I teach my kiddoes. This gave me a headache!Anonymoushttps://www.blogger.com/profile/01051141273164126419noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-46480459052451063792013-09-06T21:12:58.620-06:002013-09-06T21:12:58.620-06:00For me, in lieu of adding the digits it makes more...For me, in lieu of adding the digits it makes more sense after getting the totals in the grouping to start at the right and each going around goes from the ones, tens, hundreds, thousands, etc. So in the 15x23 you ended up with 2, 13 and 15 so starting at the right you have 15 ones, 13 tens (=130) and 2 hundreds (200) thuse 200+130+5=345. In the 121×212 you had 25652 so obviously that's easier but to break down from right to left 2 ones, 5 tens, 6 hundreds, 5 thousands and 2 ten thousands. That's essentially what it's saying anyway because it really is the same as our column multiplication as it is multiplying the digits via the intersecting lines. May help others to see it that way to understand why it works.Allyhttps://www.blogger.com/profile/06655263631500959365noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-43720757206669016872013-09-04T14:27:25.918-06:002013-09-04T14:27:25.918-06:00I find it is easier to do the "normal" c...I find it is easier to do the "normal" column method, but this method might work really well for my brother who has discalculia (dislexia but with numbers). Multiplication doesn't click for him as normally taught, but something like this might make it possible for him to figure it out. Next time I see him I'm going to see if this makes any sense to him. Marquettehttps://www.blogger.com/profile/09112633611070405863noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-61370496107674403972013-09-04T14:25:07.883-06:002013-09-04T14:25:07.883-06:00I think I have it figured out; let's see if I ...I think I have it figured out; let's see if I can explain it just in words (you might have to do the problem as I explain for it to make sense). I ended up with grouping numbers of (starting at top and moving around clockwise) 25, 80, 124, 96, and 36. To figure this one out I ended up using Jenn's tip to work right to left (or counter clockwise) starting with the last number, which for this particular problem would be the 36. I circled the 6 so I'd know that was my final single digit. Then I took the 3 and added it to the 6 of the 96. Then I took the 9 of the 96 and added it to the 4 of the 124. Then I took the 12 (as they were the remaining numbers) of 124 and added it to the 0 of 80. I added the 8 of 80 to the 5 of 25. And that left the 2 single. So then here were the numbers I had left, starting at the top and working CW: 2, 13, 12, 13, 9, 6. Again, I started at the bottom number and worked my way back up Counter Clockwise. The 6 and 9 I left alone because they were already single digits. You then take the 3 off the 13 and make it a single digit in the sequence (so the last three numbers of the final answer will be 396). Take the 1 of the 13 and the 2 of the 12 and add them together. Take the 1 of the 12 and add it to the 3 of the 13. Take the 1 of the 13 and add it to that first 2. Finally you have all single digits and your answer, 343,396. Marquettehttps://www.blogger.com/profile/09112633611070405863noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-89050111612892895752013-09-04T13:45:55.173-06:002013-09-04T13:45:55.173-06:00I'm curious to know how you would do a problem...I'm curious to know how you would do a problem like 568 X 586. Once you group them together diagonally you have 5 groups and one of those groups contains a 3 digit number. I tried to wrap my brain around it but gave up. Although, I am still curious to know how that works. Anonymoushttps://www.blogger.com/profile/08958620095472721467noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-46542385385912972452013-09-03T16:09:09.437-06:002013-09-03T16:09:09.437-06:00Isobel says this looks a lot like something that M...Isobel says this looks a lot like something that Miro would paint. ;O)<br />Kathleenhttps://www.blogger.com/profile/00670017068516575306noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-22042222310847697012013-09-03T14:20:30.783-06:002013-09-03T14:20:30.783-06:00I went to figure it out right away and really had ...I went to figure it out right away and really had a good time with it. I found the carrying easier if you do the first number with the horizontal lines, second number with the vertical. Thanks for bringing this to my attention.Gramma's Cornerhttps://www.blogger.com/profile/11989938887191987414noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-35745238590717919502013-09-03T13:17:17.434-06:002013-09-03T13:17:17.434-06:00I'm sure that depends on how you were taught t...I'm sure that depends on how you were taught to do it as a kid. Whatever you're already used to is usually easiest as an adult.~https://www.blogger.com/profile/16998439435055176874noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-29463885885983831332013-09-03T11:56:07.574-06:002013-09-03T11:56:07.574-06:00No. Just nope. Columns and numbers, please! Lol!No. Just nope. Columns and numbers, please! Lol!Cynthiahttps://www.blogger.com/profile/02375269942861558997noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-53202523014832951872013-09-03T07:17:02.806-06:002013-09-03T07:17:02.806-06:00Isn't it a lot easier to just multiply the reg...Isn't it a lot easier to just multiply the regular way, in a column? Same principle, less useless lines.BlackKittyhttps://www.blogger.com/profile/14014093330317682849noreply@blogger.comtag:blogger.com,1999:blog-6299578764487881408.post-48284866942921118422013-09-02T16:58:54.515-06:002013-09-02T16:58:54.515-06:00I'd worked all this out earlier - I can't ...I'd worked all this out earlier - I can't look at something like that without at least *trying* to figure out how and why it works. <br /><br />I'd agree with you on all points except the 'working from the left' bit. This method takes any multiplication problem and turns it into an addition sum. I always work from right to left in addition and so did the same here (both working it out and writing it down right to left). This made the whole 'carrying the one' bit far clearer and more natural.Jennhttps://www.blogger.com/profile/17435967508106016366noreply@blogger.com