Effective writing is readable — that is ... Use words for numbers above 10 if these numbers come at the beginning of a sentence or heading ("Two thousand eight was a challenging year for ...

When you are writing, words are grouped together ... to make sure your sentences are clear. Firstly, a sentence needs a capital letter at the beginning and a punctuation mark at the end, like ...

When you are writing, words are grouped together ... to make sure your sentences are clear. Firstly, a sentence needs a capital letter at the beginning and a punctuation mark at the end, like ...