There are two options.
1) Convert to decimals first:
3.25 x 5.25
2) Break them down in simple fractions
Take the denominator and multiply it by the whole number, then add the numerator.
3 1/4 = (3 x 4) + 1 = 13/4
5 1/4 = (5 x 4) + 1 = 21/4
2007-09-06 19:30:46
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answer #1
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answered by stacichu7 3
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some calculators will let you enter complex fractions directly but the faster way is to do some of this in your head then enter it.
It is easy:
3 1/ 4 is 4 * 3 + 1 over 4 = 13/4
5 1/4 is 4 * 5 + 1 over 4 = 21/4
Now enter 13 divided by 4 plus 21 divided by 4 equals
and you should get 8.5 for an answer.
2007-09-06 19:28:09
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answer #2
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answered by 037 G 6
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You must convert the fractions to decimal first.
1/4=0.25 so
3 1/4 * 5 1/4 would be 3.25 * 5.25
Some calculators have a fraction button, and you can enter 3 1/4 * 5 1/4 directly, but most don't and you have to convert to decimal first.
2007-09-06 19:22:40
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answer #3
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answered by I don't think so 5
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You can either type it in as "(3+1/4)x(5+1/4)" or make it into the equivalent decimal values 3.25x5.25.
Hope that helped.
2007-09-06 19:24:50
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answer #4
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answered by James 3
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I would convert these numbers to mere fractions.
3 and 1/4 would become 13/4.
5 and 1/4 would become 21/4.
Then I would multiply and reduce.
2007-09-06 19:23:19
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answer #5
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answered by Matiego 3
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[ ( ] [ 3 ] [ + ] [ 1 ] [ / ] [ 4 ] [ ) ] [ * ] [ ( ] [ 5 ] [ + ] [ 1 ] [ / ] [ 4 ] [ ) ] [ = ] will yield 17.0625
. . . or if you have a "mixed number key",
[ 3 ] [a b/c] [ 1 ] [a b/c] [ 4 ] [a b/c] [ * ] [ 5 ] [a b/c] [ 1 ] [a b/c] [ 4 ] [a b/c] [ = ] will yield 17 1 16
2007-09-06 19:50:24
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answer #6
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answered by Helmut 7
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First, you should know that the decimal equivalent of ¼ is 0.25.
Therefore, 3.25 * 5.25 = 17.16
If you don't know the decimal equivalent, you deconstruct the problem:
1÷ 4 (=0.25) + 3 (=3.25)
* 1÷ 4 (=0.25) + 5 (= 5.25) = 17.16
2007-09-06 19:27:39
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answer #7
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answered by bedbye 6
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What type of calculator are you using?
2007-09-06 19:36:45
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answer #8
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answered by kranberri1975 1
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1 : 4 = 0.25 it is 3.25 and same with 5.25 and..........3.25 : 5.25 = 17.06
2007-09-06 19:28:21
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answer #9
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answered by Freesia 5
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just press the keys...
2007-09-06 19:39:29
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answer #10
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answered by feebee!!!!! is back!!!! 4
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