evaluate 2/9 plus 1/6
Hello! How do you think you might start this question?
(It's okay if you have no idea!)
I haven't done this for 4 years and I need some refreshing
Okay, no problem! To add up fractions, you need to make sure the denominators are the same (that's the bits on the bottom, so 9 and 6 in this case).
ok so 3 would be the best denominator
Well, you're on the right lines :) Actually we need a multiple of 6 and 9, rather than a divisor of 6 and 9.
ok so 18 goes into 6 3x and 2x into 9
Perfect!
So now we need to turn 2/9 into ???/18. What do you think that "???" bit might be?
9-2= 7???
Um, not quite. Maybe this picture will help:
Here I've taken a pizza and divided it into 9 slices, then I've coloured 2 slices:|dw:1409569271475:dw|
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