A NUMBER BEGINNING A SENTENCE.
Fifteen cartons were delivered today.
Sixteen students passed the course.

APPROXIMATE AND ROUND NUMBERS.
We expect nearly eighty guests.
We registered one hundred students.

NUMBERS UNDER TEN.
We sent nine invitations.
Sara bought three blocks.

AGES OF PEOPLE, IN YEARS.
Richard is twenty years old.
Gloria will be fifteen in May.

NUMBERS PRECEDING O’CLOCK.
Jim will see you at seven o’clock.
The Director will arrive at ten o’clock.

DATES, WHEN THE MONTH IS NOT GIVEN.
We received your fax of the third.
The boss is leaving on the tenth.

NUMBERED STREETS, TEN AND BELOW.
Henry lives at 876 Seventh Street.
Jean took a bus to Eighth Avenue.

ORDINAL NUMBERS.
The patient recovered after the first week.
Our boss returned after the third day.

CENTURIES AND DECADES.
Cartagena was founded in the fifteenth centuries.
The Twentieth Century is gone.

INDEFINITE AMOUNTS OF MONEY.
He earns several thousands a year.
She paid a couple hundred dollars for it.

WHEN TWO NUMBERS OCCUR TOGETHER.
Write the larger and spell out the other.