Question

Decrease £200 by 12.5%

Answer 1

25% of £200 = £50
25% divided by 2= 12.5%
£50 divided by 2 = £25
£200-£25 = £175

Answer 2

Non-calculator
Method
$100\% = 200$
You divide both sides by 10 to get 10%
$10\% = 20$
You divide by 10 to get 1%
$1\% = 2$
Now you divide by 2 to get 0.5 (or 1/2 of 1)
$0.5 \%= 1$
You can find 2% by multiplying 2 to 1% and 2
$2\% = 4$
Now you need to add the 10% with 0.5% and 2% which give you 12.5%.

$12.5\% = 20 + 1 + 4$
$12.5\% = 25$
Now you takeaway 25 from 200
$200 - 25 = 175$

Decrease 200 by 12.5%
$175$