At last they understand. Thank you my class have been struggling with common denominators etc and now they get it.
from BigP, 25 August 2010

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5 out of 5

Confusing. When changing a fraction to an equivalent fraction we might multiply by 2/2 or 3/3 NOT by 2 or 3. The way these worksheets are designed I feel will cause misconceptions and inaccuracies. Apart from this they are great but for me, sadly unusable.
from sethan, 24 August 2010

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3 out of 5

x4 should be x 4/4, shorely??. pet hate.
sorry
from begbiesan, 13 June 2010

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3 out of 5

Many Thanks. Thank you for sharing an excellent resource.
from PhysicsandMaths, 12 June 2010

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5 out of 5

Misconception. Pontydave has modestly called his comment pedantic, but he is absolutely right. It is so important to know that, although the digits of a fraction have changed, the value of the fraction has not changed when you multiply or divide it by 1, and that the number 1 can be expressed as a vertically symmetrical fraction. Multiplying a fraction by any integer other than 1 changes the numerator and the value of the whole fraction, but not the denominator. It is the denominator which needs changing for the purpose of adding fractions and that can only be done by multiplying the whole fraction by another fraction.
from acw285, 11 June 2010

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3 out of 5
