This is a complex topic, with many exceptions, and there is no consistency we can rely on among blogs, books, newspapers, and magazines.I thought there were nine biscuits left in the tin? If the number is less precise, it may be possible to write the number in words. The lower attaining maths group's mean score was 88.6, with a standard deviation of 14.3.There are over thirty million people living in Mexico City.This chapter will confine itself to rules that all media seem to agree on..Firstly, we need to distinguish a number and a numeral.He tried to retrieve the lost bottle with a 5-foot stick. One hundred and seventeen protests were lodged with the ombudsman.Six hundred and thirty-five nuggets were discovered in the first day of the gold rush. We left the pub at around eight o'clock and got home at around nine. “Three,” “3” and “III” are all symbols used to express the same number (or the concept of “threeness”). The small numbers, such as whole numbers smaller than ten, should be spelled out. If you don’t spell numbers out it will look like you’re sending an instant message, and you want to be more formal than that in your writing. No other standard rule: Experts don’t always agree on other rules. In Continental Europe the opposite is true, periods are used to separate large numbers and the comma is used for decimals. Use “About 400 million people speak Spanish natively,” instead of “About 400,000,000 people speak Spanish natively If you’re using the exact number, you’d write it out, of course. A number is an abstract concept while a numeral is a symbol used to express that number. So write the size of Alaska as 571,951 square miles instead of 571951 square miles. Make it “Fourscore and seven years ago,” not “4 score and 7 years ago.” That means you might have to rewrite some sentences: “Fans bought 400,000 copies the first day”. Rounded numbers over a million are written as a numeral plus a word. It can be confusing if you write “7 13-year-olds”, so write one of them as a numeral, like “seven 13-year-olds”. When using numbers in essays and reports, it is important to decide whether to write the number out in full (two hundred thousand four hundred and six) or to use numerals (200,406).There are some rules to follow to make sure you use numbers in the right way.