Adding and Subtracting Rational Expressions

This video tutorial covers the basics of real numbers, focusing on integers and their properties. It explains what integers are, how to identify positive and negative integers, and how to compare and order them using greater than and less than symbols. The tutorial also covers arranging integers from least to greatest and introduces the concept of absolute value, explaining it as the distance from zero on a number line. The lesson concludes with a preview of operations involving integers and absolute values.

What are integers?

• Only negative numbers

• Only positive numbers

• Whole numbers and their opposites

• Decimal numbers

On a number line, where are negative numbers placed in relation to zero?

• To the right of zero

• Below zero

• Directly above zero

• To the left of zero

What does a three-yard gain in football represent in terms of integers?

• 0

• +1

• -3

• +3

Which integer represents an 8 degree drop below normal temperature?

• +8

• -8

• 0

• +1

If you have negative 7 and negative 23, which is closer to zero?

• Cannot be determined

• Negative 23

• Both are equally close

• Negative 7

Which symbol correctly compares -18 and -15?

• Symbols cannot be used

• -18 = -15

• -18 < -15

• -18 > -15

Arrange the following integers in order from least to greatest: -9, 5, -1, 0, 2, 4, 13.

• -9, -1, 0, 2, 4, 13, 5

• -1, -9, 0, 2, 4, 5, 13

• -9, -1, 5, 0, 2, 4, 13

• -9, -1, 0, 2, 4, 5, 13

What is the absolute value of -20?

• -1

• 20

• -20

• 0

How is the absolute value of a number represented?

• With parentheses

• With a minus sign

• With a plus sign

• With vertical bars

What is the absolute value of 7?

• -7

• 0

• 1

• 7