How can i work out currency conversion with just pen and paper?

Question

For example " a book costs $22 online. The exchange rate is £1 to $1.46. How much is it in pounds? I need to work it out quickly using pen and paper. Is long division the quickest way?Dont tell me to go to a currency convertor on the net!! cheers for the help!

Answer 1

$1.46 => £1
$22 => 22/1.46 = 2200/146 = £15.07
Yes, I would say that long division is the best if you do not have a calculator on hand.

However, I generally approximate the value instead of obtaining the actual. I will approximate $1.50 => £1, so $3 => £2.
For a price of $22, on dividing this by 3, I can mentally get 7 1/3 and then I multiply this by 2 which will be 14 2/3 = £14.67 which is close enough for me to know the rough amount that I'll be spending.

Answer 2

try this it works with all sorts a stuff:

sterling = dollar
£1 = $1.46

so

£2 = $2.92
doubing both sides
and

£4 = $5.84
£8 = $11.68
£16 = $23.36
etc just double both each time till u get close to your goal for a rough idea...
u can get clever to b more exact as follows without a calc
got the nearest amount below your target $22 in this case $11.68
and u can work up the column adding the amounts on both sides to get your answer so:

£8 = $11.68
£4 = $5.48
__ ______
£12 = $17.16



see we gettin closer to $22
so keep going but another 5.48 goes over 22 so use next one down
£12 = $17.16
£2 = $2.92
___ _______
£14 = $20.52

then again
£14 = $20.52
£1 = $1.46
__ _____
£15 = $21.98
wont get much closer without a calc.
if u got a calc then


1/1.48=£sterlin/22
(1/1.48)/22=sterlin which is £14.86
close enough ?

Answer 3

if its £1 to 1.46$ work it out roughly as £2-3$
£4 =6$
£5=7.46$

Answer 4

Long division is indeed the best way.
22 / 1.46 will give you the answer.

Answer 5

1/1,46=0,685
so multiply the 22 by 0,685=15,07

Answer 6

estimate it first den try long division with da answers u estimate you wont be far out