Home : 2008 : April : 11
not easy
By roo
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This is not easy for kids that are just really learning how fractions, decimals and percentages relate. There was a question like this on our state test last year (I only know because they ALL raised their hands and asked how to do it...poor kids.) Anyway, here's what was expected.
6/8 is not in simplest form. If you reduce (by dividing by 2/2) you'll get 3/4. Three fourths is one of those benchmark fractions (like 1/4, & 1/2) that our kids are supposed to be able to easily convert to a percentage (1/4=25%, 1/2=50%, 3/4=75% because of money). To actually do the math to convert it, | |
you'd turn 3/4 into an equivalent fraction, using 100 as your new denominator. 4 must be mult. by 25 to = 100, so you need to mult. the numerator 3 by 25 as well (to be sure you are multiplying by a fraction name for 1). 3x25 =75. 75/100 is = to 75 percent (since percent means out of 100).
For some reason, the 9 & 10 year olds I teach think this is a bit complicated. Wonder why?;)
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