 |
| My process |
Base 60 Multiplication Table for 45:
| Col.I |
| Col.II |
|
| 1,15 |
| 36 |
|
| 2,5 |
| 21,36 |
|
| 4 |
| 11,15 |
|
| 6 |
| 7,30 |
|
| 7,12 |
| 6,15 |
|
2,5 x 21,36 second attempt:
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Course Reflection Post
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Image source: http://img.auctiva.com/imgdata/5/0/2/1/4/6/webimg/398850408_o.jpg One of the overall things that surprised me about this readi...
Looking at your table entries #1 -5: #1, 3, 4, 5 -- great! #2: gives too large an answer when I try it. How could you fix it if there is a problem (or convince me that this works?)
ReplyDeleteHi Susan. I've updated the post with my second attempt but I still got the same answer. Please let me know what method you used so I can see where I may have gone wrong. In my second attempt, I multiplied using the FOIL method just to keep everything in fractions of 60 or 3600. That is, 2x21 = 42; 2x36/60 = 72/60; 5/60x21 = 105/60; 5/60x36/60 = 180/3600, and then I added those totals together to get 45.
ReplyDeleteAh, OK, I see it now (and I see where I made a mistake)! Thanks for revisiting this and convincing me. Good technique for checking!
ReplyDelete