Number of Days in the Month

30 days have September, April, June and November; all the rest have 31, excepting February alone, which has but 28 days clear and 29 in each Leap year.

GB/US usage can have a comma in place of a full point e.g. 6,770,400 (six million, seven hundred seventy thousand and four hundred; 470,085 (four hundred seventy thousand and oh eighty-five. This comma way can also be replaced by a full point and will be written as 470.085 or 6.770.400.

Read the numbers: 281.500; 296.900; 244.100; 8,548,075; 25,571,463.

Numbers: Additional Information

1. a) Note “A” [ ] hundred is a less formal USAGE than “one [ ] hundred”

b) In the spoken forms of vulgar fractions (in common use; generally prevalent), the versions “a half ½ /a quarter ¼ /a third 1/3” are preferred to “one half/one quarter/one third” whether the measurement is approximate or precise. With more obviously precise fractions like 1/8, 1/16: “one eight”, “one sixteenth” is normal.

c) In collective numbers:

“6” – is “a half dozen” or half a dozen

“12” – is “a dozen” or one dozen

“20” – is “a score” or one score

“24” – is “two dozen” and not two dozens

“144” – is “a gross” or one gross [ ]

2. Mathematical Expressions

Below are some of the more common symbols and expressions used in mathematics and statistics where the first one is more formal and the second less:

“ + ” – plus or and;

“ – “ – minus or take away;

“ x ” – (is) multiplied by or times;

“ : “ – (is) divided by;

“ = ” – is equal to or equals;

“ < ” – is less than;

“ > ” – is more than;

“ % ” – per cent

3. Computer numbers

Cheque books, business accounts have long strings of numerals. If such a number has to be read aloud, the numerals are spoke as separate digits. Doubled numerals may be read separately or “66” as “double six”. For example, “05216472” is, oh, five/two, one/six, four/seven, two. “0” can also be read as “zero” (formal).

4. Measurements

Traditionally GB and US measurements have been made in inches, feet, yards, miles but there is now a move towards the metric system of millimeters, metres, kilometers.

Distance

a) London to New York is three thousand, four hundred and forty-one miles (3 441 miles).	b) London to New York is five thousand, five hundred and six kilometers (5 506 km).
Height/Depth
a) The airliner is flying at a height/an altitude of twenty thousand feet (20.000 ft).	b) The airliner is flying at a height/an an altitude of six thousand metres (6 000 m).
a) The sea’s average depth is twelve thousand feet or two and a half miles (12.000 ft).	b) The sea’s average depth is three thousand seven hundred metres (3 700 m).
Dimension
a) This room is sixteen foot/feet (wide) by twenty-five (foot/feet) (long). (16 ft x 25 ft or 16’x25’).	b) This room is three metres (wide) by eight and half (metres) (long). (3 m x 8.5 m).
Area
a) Scotland has an area of thirty thousand, four hundred and five square miles (30 405 sq miles).	b) Scotland has an area of seventy-six thousand, two hundred and thirty-five square kilometers (76 235 sq km).
a) The house is for sale with ten acres of grounds.	b) The house is for sale with four hectars of ground.