  Math Central - mathcentral.uregina.ca  Quandaries & Queries    Q & Q    Topic: decimal numbers   start over

3 items are filed under this topic.    Page1/1            Multiplying decimal numbers 2008-02-05 From alwyn:Why should when you Multiplying Decimal numbers is value becoming less and less? don't you think even decimal number is a quantity and in no chance when it multiplies its should become less or nil !!! In fact all Multiplying and or adding the value will go up and only when you subtract and divide it should become less !!Answered by Stephen La Rocque and Penny Nom.     X.9999... and X+1 2003-08-23 From David:I have read your answers to the questions on rational numbers, esp. 6.9999... = ? and still have a question: The simple algebraic stunt of converting repeating decimals to rational numbers seems to work for all numbers except X.999999.... where X is any integer. The fact that the method yields the integer X+1 in each case seems to violate the completeness axiom of the real numbers, namely that there is no space on the number line which does not have an number and conversely that every geometric point on the number line is associated with a unique real number. In the case of 3.999... for example, it seems that both the number 4 and the number 3.9999.... occupy the same point on the number line. How is this possible???Answered by Penny Nom.     Place Value 1999-01-05 From Reg:I work in a Section 27 classroom with various grades. I am looking for assistance on how to deliver a lesson on place value:decimal numbers keeping in mind that they need to see it (visual) to comprehend. I am looking for grade 4-6 level.Answered by Jack LeSage.      Page1/1    Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.    about math central :: site map :: links :: notre site français