Money

Use symbols for all currencies. Use figures even if it's under 9, and commas to punctuate large numbers:

I owe you £8.50.

Please can you transfer €12,000?

When you do need to use the whole word, write it in lower case:

I need to transfer some pounds into euros.

They made me feel like a million dollars.

There's no need to write the ".00" at the end:

The wine was dangerously cheap at just £3.

Abbreviate dollars as follows:

$50 (US dollars)

A$50 (Australian dollars)

HK$50 (Hong Kong dollars)

Write "m", "bn" and "tn" for large sums of money:

£10m

$45tn

But never use "k" for thousand - write it out in figures:

£23,000