Chapter 2 Terms

Question 1

If A is a number then -(-A) is =

Answer 1

A

Question 2

IMPORTANT: When Subtracting 2 Numbers.

If A, and B are numbers, then a +(-b) =

Answer 2

a - b.

Question 3

Inequality

Answer 3

A statement between two quantities usually separated by a sign of inequality.

Signifying less than, greater than, or not equal to.

Question 3

What does it mean to say the sum of a number and its opposite is 0?

Answer 3

If A Is a number, then

A +(-A) = 0

-A + A = 0

Question 4

ADDING two integers with DIFFERENT signs

Answer 4

Subtract the smaller absolute value from the Larger absolute value.

Use the Sign of the number w/ the largest Absolute value for the answer.

Question 5

The Product of an ODD number of _______ is an negative result but, an EVEN number of _________ is a positive number.

Answer 5

Negatives (-) /

Negatives (-)

Question 6

Integers

Answer 6

A whole number (Positive or Negative)

-1,0,1

Question 7

Additive Inverse

Answer 7

The additive inverse of a number is the opposite of that number,

that is,

the additive inverse of a number x is -x.

The sum of a number and its additive inverse is always zero, that is, x + (-x) = 0.

Question 8

Absolute value

Answer 8

The magnitude of a number regardless of its sign. Hence, the absolute value of a number “X” is always positive or zero. It is written as |x|.

When the number “X” is represented on a number line, its absolute value is the distance from the origin (zero) to that number.

-l-x l = x

|-x| = x

• |x| = -x

|0| = 0

Question 9

ADDING Integers with the a SAME signs

Answer 9

Add Their two absolute Values & Use their common sign.

Question 10

Is 0 a Positive or Negative Number

Answer 10

Neither

Question 11

A way of grouping nnumbers into categories based on their structure

Answer 11

Number Classifications

Question 12

non-negative counting numbers

1, 2, 3, 4, … . Some exclude 0 (zero) from the set

Answer 12

Natural Numbers

Question 13

Both Positive and negative Natural Numbers(Whole Numbers)

-4, -3, -2, -1, 0, 1, 2, 3, 4,

Answer 13

Integers

Question 14

Integers that include both fractions and decimals

The ratio or quotient of an integer

and

another NON-ZERO integer

-100, -20¼, -1.5, 0, 1, 1.5, 1½ 2¾, 1.75

Answer 14

Rational Number

Question 15

Numbers that dont include

fractions, or integers

and can have a decimal value that continues forever WITHOUT a pattern

these are numbers which cannot be represented as fractions.

√2, √3, 3.141592653…(π)

(non rational)

Answer 15

Irrational numbers

Question 16

Both Rational and Irrational numbers.Every Number on the number line

-100, -20¼, -1.5, 0, 1, 1.5, 1½ 2¾, 1.75, √2, √3,3.141592653…(π)

Answer 16

Real Numbers

Question 17

A number which square is a negative real number.

-5i, 3i, 7.5i

Answer 17

Imaginary Number

Question 18

The Combonation of both Real and Imaginary numbers.

7 + 2i

Answer 18

Complex Numbers

Question 19

Natral Numbers & 0

0,1, 2, 3, 4, …

Answer 19

Whole Numbers