So, let's say we're given this question:
Poppy has £6. Her mum gives her an extra £2. Calculate the percentage increase in Poppy's money.
So, we want to know how much Poppy got as a percentage of what she originally had.
To do this, we divide 2 by 6:
2/6 = 0.33" (the " symbol means recurring)
And then multiply by 100:
0.33" x 100 = 33.33" %
So Poppy's money increased by 33.33%.
However, we're going to do a slightly harder one:
Joshua and Verity have 4 children. A year later, they have 5 children. Calculate the percentage increase in Joshua and Verity's children.
To find the percentage increase, we first need to know the increase. In the last question, it told us - £2 - but this one just gives us the final number.
To find the increase in children, we find the difference between 4 and 5:
5 - 4 = 1
Ok, so they had 4 children, and now they have 1 more. Which means:
1/4 = 0.25
And then:
0.25 x 100 = 25%
So they now have 25% more children than they did a year ago. Here is a quick quiz to test yourself:
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