Algebra Know-It-ALL

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CHAPTER

10 Review Questions and Answers

Part One

This is not a test! It’s a review of important general concepts you learned in the previous nine

chapters. Read it though slowly and let it “sink in.” If you’re confused about anything here, or

about anything in the section you’ve just finished, go back and study that material some more.

Chapter 1

Question 1-1

What’s the difference between a number and a numeral?

Answer 1-1

A number is an abstraction. Numerals are tangible or physical symbols that represent num-

bers, such as 30 or 7 as they appear on this page. A numeral is not a number, just as your name

is not you.

Question 1-2

In the Roman numeration system, how would we write the equivalents of the following decimal

numerals?

(a) 10 (b) 30 (c) 40 (d) 50

(e) 100 (f ) 300 (g) 400 (h) 600

Answer 1-2

The Roman equivalents are:

(a) X (b) XXX (c) XL (d) L

(e) C (f ) CCC (g) CD (h) DC

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