Find the number which when added to the top (numerator) and bottom (denominator) of each fraction make it equivalent to one half. more...
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Find the number which when added to the numerator and denominator of each of the fractions above make them equivalent to one third.
What should be added to the numerator and denominator of the fraction whose numerator is n and denominator is d to make it equivalent to one half?
What should be added to the numerator and denominator of the fraction whose numerator is n and denominator is d to make it equivalent to one third?
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Numbers and the Making of Us
I initially heard this book described on the Grammar Girl podcast and immediately went to find out more about it. I now have it on my Christmas present wish list and am looking forward to receiving a copy (hint!).
"Caleb Everett provides a fascinating account of the development of human numeracy, from innate abilities to the complexities of agricultural and trading societies, all viewed against the general background of human cultural evolution. He successfully draws together insights from linguistics, cognitive psychology, anthropology, and archaeology in a way that is accessible to the general reader as well as to specialists." more...
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A glass ½ full = A glass ½ empty
Multiply both sides by two
A full glass = An empty glass