18. Most measurements have technical significance and should be expresses in figures (even for 1 through 10) for emphasis or quick comprehension. However, spell out an isolated measurement that lacks technical significance.

a. A higher rate is charged for parcels over 2 pounds.	d. Add 1 quart of sugar for each 4 quarts of berries.
b. But: I'm afraid I've gained another two pounds this week	e. But; We picked four quarts of berries from our garden.
c. We don't charge for delivery within a 30-mile radius.	f. But: It's a thirty-mile drive to their home.

19. When a measurement consists of several elements, do not use commas to separate the elements. The measurement is considered a single element.

a. It weighed 8 pounds 11 ounces.

b. The punch bowl holds 4 quarts 1 pint.

c. Hank is 6 feet 8 inches tall.

20. Express ages in figures (including 1 through 10) when they are used as significant statistics or as technical measurements.

a. Mabel Pratt, 38, died in an accident today.	d. You must accept an application from a person aged 58.
b. The program will help all 8- and 9-year-olds.	e. This policy covers people in the 50-plus age group.
c. You retirement benefit is payable at the age of 65.	f. On January 1 she will be 19 years 4 months 19 days old.