Fundamentals of Mathematics, 2008a

524 CHAPTER 9. MEASUREMENT AND GEOMETRY
9.3.6.1 Exercises for Review
Exercise 9.3.26 (Solution on p. 570.)
(Section 5.3) Find the value of 5 8 − 1 3 + 3 4 .
Exercise 9.3.27
(Section 7.3) Solve the proportion:
9
x = 27
60 .
Exercise 9.3.28 (Solution on p. 570.)
(Section 8.2) Use the method of rounding to estimate the sum: 8, 226 + 4, 118.
Exercise 9.3.29
(Section 8.3) Use the clustering method to estimate the sum: 87 + 121 + 118 + 91 + 92.
Exercise 9.3.30 (Solution on p. 570.)
(Section 9.2) Convert 3 in. to yd.
9.4 Simplication of Denominate Numbers 4
9.4.1 Section Overview
• Converting to Multiple Units
• Adding and Subtracting Denominate Numbers
• Multiplying a Denominate Number by a Whole Number
• Dividing a Denominate Number by a Whole Number
9.4.2 Converting to Multiple Units
Denominate Numbers
Numbers that have units of measure associated with them are called denominate numbers. It is often
convenient, or even necessary, to simplify a denominate number.
Simplied Denominate Number
A denominate number is simplied when the number of standard units of measure associated With it does
not exceed the next higher type of unit.
The denominate number 55 min is simplied since it is smaller than the next higher type of unit, 1 hr. The
denominate number 65 min is not simplied since it is not smaller than the next higher type of unit, 1 hr.
The denominate number 65 min can be simplied to 1 hr 5 min. The denominate number 1 hr 5 min is
simplied since the next higher type of unit is day, and 1 hr does not exceed 1 day.
9.4.2.1 Sample Set A
Example 9.8
Simplify 19 in.
Since 12 in. = 1 ft, and 19 = 12 + 7,
19 in. = 12 in. + 7 in.
= 1 ft + 7 in.
= 1 ft 7 in.
4 This content is available online at .
Available for free at Connexions