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Title: Mafs Post by: RED-DOG on March 29, 2015, 11:30:51 AM What is one quarter plus two fifths please?
Title: Re: Mafs Post by: TightEnd on March 29, 2015, 11:32:52 AM What is one quarter plus two fifths please? 0.65 or just under 2/3 Title: Re: Mafs Post by: RED-DOG on March 29, 2015, 11:35:35 AM What is one quarter plus two fifths please? 0.65 or just under 2/3 Ah. I wanted it expressed as a fraction. Title: Re: Mafs Post by: tikay on March 29, 2015, 11:39:24 AM 13/20, or "thirteen twentieths" I think.
A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. Title: Re: Mafs Post by: RED-DOG on March 29, 2015, 11:43:25 AM 13/20, or "thirteen twentieths" I think. A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. I only think in AF spanner sizes, like 19/32 or 11/16. Title: Re: Mafs Post by: tikay on March 29, 2015, 11:55:39 AM 13/20, or "thirteen twentieths" I think. A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. I only think in AF spanner sizes, like 19/32 or 11/16. There's not much between 13/20 and 11/16. Title: Re: Mafs Post by: RED-DOG on March 29, 2015, 11:57:04 AM 13/20, or "thirteen twentieths" I think. A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. I only think in AF spanner sizes, like 19/32 or 11/16. There's not much between 13/20 and 11/16. I know, but I don't know how to work out if it's the right answer to my sum. Title: Re: Mafs Post by: tikay on March 29, 2015, 12:01:19 PM 13/20, or "thirteen twentieths" I think. A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. I only think in AF spanner sizes, like 19/32 or 11/16. There's not much between 13/20 and 11/16. I know, but I don't know how to work out if it's the right answer to my sum. You have lost me there Tom. I gave the correct answer, and explained how to work it out. Title: Re: Mafs Post by: RED-DOG on March 29, 2015, 12:03:22 PM 13/20, or "thirteen twentieths" I think. A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. I only think in AF spanner sizes, like 19/32 or 11/16. There's not much between 13/20 and 11/16. I know, but I don't know how to work out if it's the right answer to my sum. You have lost me there Tom. I gave the correct answer, and explained how to work it out. Oh, sorry Tone. When you said "I think we need to find.." I thought we were still looking. Title: Re: Mafs Post by: tikay on March 29, 2015, 12:08:32 PM 13/20, or "thirteen twentieths" I think. A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. I only think in AF spanner sizes, like 19/32 or 11/16. There's not much between 13/20 and 11/16. I know, but I don't know how to work out if it's the right answer to my sum. You have lost me there Tom. I gave the correct answer, and explained how to work it out. Oh, sorry Tone. When you said "I think we need to find.." I thought we were still looking. Ha, gotcha. "I think" was just lack of self confidence, always leave an escape route. :) "we" was just a botched attempt to "teach" you the logic. I always think "we" is a better way to learn stuff. Big psychological difference between "this is what YOU must do" and "this is what WE must do". Hope that does not come across badly. Title: Re: Mafs Post by: RED-DOG on March 29, 2015, 12:16:45 PM 13/20, or "thirteen twentieths" I think. A quarter is 5/20, and two fifths is 8/20. Think we need to find an expressable common denominator, in this case 20 is divisible by both. I only think in AF spanner sizes, like 19/32 or 11/16. There's not much between 13/20 and 11/16. I know, but I don't know how to work out if it's the right answer to my sum. You have lost me there Tom. I gave the correct answer, and explained how to work it out. Oh, sorry Tone. When you said "I think we need to find.." I thought we were still looking. Ha, gotcha. "I think" was just lack of self confidence, always leave an escape route. :) "we" was just a botched attempt to "teach" you the logic. I always think "we" is a better way to learn stuff. Big psychological difference between "this is what YOU must do" and "this is what WE must do". Hope that does not come across badly. I could see that the answer was right, but it didn't sound like it should be expressed that way, I've never heard of 13/20, hence my suggestion of 11/16. Well I say my, I mean our. Title: Re: Mafs Post by: tikay on March 29, 2015, 12:23:48 PM We can't really express it any better way, can we....... Title: Re: Mafs Post by: david3103 on March 29, 2015, 12:32:09 PM You could express it as 104/160 which makes comparison with the AF size easier.
11/16 = 110/160 19/32 = 95/160 |