Page 399 - Practical English Usage 3ed - Michael Swan, Oxford

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3 x 4 = 12 Three fours are twelve. (informal) Three times four is twelve. (informal)
Three multiplied by four equals/is twelve. (formal) 9 + 3 =3 Three(s) into nine goes three (times). (informal)
Nine divided by three equals/is three. (formal) example of a spoken calculation
Here, for interest, is a multiplication (146 x 281) together with all its steps, in the words that a British English speaker might have used as he/she was working it out on paper before the days of pocket calculators.
146 x 281 29200
11680 146 41026
A hundred and forty-six times two hundred and eighty-one.
beginning: Put down two noughts. Two sixes are twelve; put down two and carry one; two fours are eight and one are nine; two ones are two.
Put down one nought. Eight sixes are forty-eight; put down eight and carry four; eight fours are thirty-two and four is thirty-six; put down six and carry three; eight ones are eight and three is eleven.
One times 146 is 146.
Six and nought and nought is six; eight and four and nought is twelve; put down two and carry one; six and two are eight and one is nine and one is ten; put down nought and carry one; nine and one
are ten and one is eleven; put down one and carry one; two and one are three and one are four.
For ways of saying and writing dates, see 152. For ways of telling the time. see 579.
of course
We use ofcourse (not) to mean 'as everybody knows' or 'as is obvious'.
It looks as ifthe sun goes round the earth, but ofcourse that's not true. We'Uleave at eight o'clock. Granny won't be coming, ofcourse.
Ofcourse can be used as a polite reply to a request. Could you help me? - Ofcourse.
But of course is not always a very polite reply to a statement of fact.
It's cold. - It certainly is. (NOT Of course it is - this would suggest that the first speaker had said something too obvious to be worth mentioning.)
next line:
next line: addition:
total:
Note how is and are can often be used interchangeably.
forty-one thousand and twenty-six.
For the use of ofcourse to structure arguments. see 157.5.
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