"Between the ages of six and ten, they know the difference between reality and fantasy."
My copy-editing question is: do you write...
"Between the ages of six and ten..." or
"Between the ages of six and 10" or
"Between the ages of 6 and 10"
I've been taught that numbers under 10 are spelled out and anything above 10 is written numerically. Do you write them differently if both six and 10 are beside each other in the same sentence?
In my opinion, you should write it as between the ages of six and ten.
I hear what you say about the convention of writing numbers as words or numerals in essays. All I can say is when writing a book, you should not write a number as a numeral unless it's over one-hundred. Unless, of course, it contains a decimal within it. By way of example, you should write the numeral 17 as seventeen. But you would write the numeral 17.4 as 17.4.
People are waiting to help.
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