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Last edited by glenberg (2009-04-04 13:52:28)
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No.
33*10 became 3*10 (mistake?)
And -0.75+0.25 = -0.5, not -1
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
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Please explain why .75+.25 become 0.5
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OK. It was -0.75+0.25, which is "minus 0.75 plus 0.25" ... in other words "subtract 0.75, then add 0.25".
If you had 30 pizzas, and i took away 0.75 of a pizze, you would have 29.25 pizzas, if I then added 0.25 you would have 29.5.
So 30-0.75+0.25 = 29.5
BUT if I had seen () used like this: 30-(0.75+0.25) that would mean to add 0.75 and 0.25 to make 1, THEN subtract.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
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OK I understand if you if add a negative the is larger than a positive you get a negative result.
Can we refer to the post 30X10-(1/4+1/2)+1/4 was there anything that made that -0.75 asking in case i missed something
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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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