Negative Numbers, Scientific Notation, and Square Roots.

Frames 5-1 through 5-33.

Pencil, eraser.

After completing this lesson, you should be able to:

5-1.

Add, subtract, multiply, and divide using negative

numbers.

5-2

Change numbers to and from scientific notation.

5-3.

Multiply and divide using scientific notation.

5-4.

Estimate square roots.

5-5

Identify the terms "absolute value," "square," and "square root."

Work the following exercises (numbered frames) in numerical order. Write

the answer in the space provided in the frame. After you have completed a

frame, check your answer against solution given in the shaded area of the

following frame. The final frame contains review exercises for Lesson 5.

These exercises will help you to achieve the lesson objectives.

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involved a temperature below zero. The answer was given as a negative

number. Sometimes it is easier to understand negative values if you use

a device such as the number line represented below. Positive numbers

are to the right of the zero; negative numbers are to the left of the zero.

(Zero is usually classified as a "non-negative" number.) Both ends of the

number line extends to infinity (without end). All whole numbers,

fractions, decimals, and mixed numbers are represented on the number

line. Negative number are denoted by a negative or minus sign () before

the number. Positive numbers are denoted by a positive or plus sign (+)

before the number or by having no sign before the number.

On a number line, ___________________ numbers are usually to the left

of zero while positive numbers are to the _________ of zero.

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MD0900

5-1

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