Module 1

Question 1

Real Number

Answer 1

All non-imaginary numbers

Ex) -4, 1/3, radical 5, 3.2

Question 2

Rational number

Answer 2

(Real) Numbers that can be expressed as a fraction or decimal, terminating or repeating
Ex) 4/5, -14, 2.1, radical 4 (square root of 4 is 2)

Question 3

Integers

Answer 3

(Real, rational) Positive and negative whole numbers including zero. No fractions or decimals.
Ex) -2, 0, 4

Question 4

Whole number

Answer 4

(Real, rational, integer) Positive whole numbers including zero. No negative numbers.
Ex) 0, 3, 6

Question 5

Natural numbers

Answer 5

(Real, rational, integer, whole) All Positive whole numbers not including zero.
Ex) 4, 7, 9

Question 6

Irrational numbers

Answer 6

(Real) Numbers that cannot be represented as a fraction including repeating decimals
Ex) radical 5, 3.2516…

Question 7

Positive x Positive

Answer 7

Positive

Note: applies to division also

Question 8

Negative x negative

Answer 8

Positive

Note: applies to division also

Question 9

Positive x negative

Answer 9

Negative

Note: applies to division also

Question 10

Negative x Positive

Answer 10

Negative

Note: applies to division also

Question 11

Order of operations

Answer 11

Grouping symbols
Exponents
Multiplication/Division
Addition/Subtraction

GEMDAS

Question 12

Variable

Answer 12

Unknown quantity

Ex) 2x + 6

Variable: x

Question 13

Term

Answer 13

Terms can contain variables, numbers, or products of variables and numbers

Ex) 2x + 6

Terms: 2x, 6

Question 14

Factor

Answer 14

Numbers you multiply together

Ex) 2x + 6

Factors: 2 and x

Question 15

Coefficient

Answer 15

The number being multiplied by the variable

Ex) 2x + 6

Coefficient: 2

Question 16

Constants

Answer 16

Numbers that stand alone

Ex) 2x + 6

Constant: 6

Question 17

Like terms

Combining like terms

Answer 17

Terms with identical variable parts

Adding or subtracting like terms to simply an expression

Question 18

Choosing units of measure

Answer 18

When measuring something small, use a small unit of measurement. When measuring something large, use a large unit of measurement.

Question 19

Precision

Answer 19

Grouped close together

Question 20

Accuracy

Answer 20

Close to center of target

Question 21

Rounding

Answer 21

Less than 5: round to 0
Greater than 5: round up 1

5: round up

Question 22

Associative property of addition or multiplication.

Answer 22

Parenthesis changing positions

Question 23

Commutative property of addition or multiplication

Answer 23

Numbers moving around and changing order.

Question 24

Distributive property

Answer 24

Numbers being distributed into parenthesis

Question 25

Reflexive property of equality

Answer 25

Same thing on both sides of an equals sign

Question 26

Symmetric property of equality

Answer 26

Swapping positions over an equals sign

Question 27

Transitive property

Answer 27

If a=b and b=c then a=c