Unit 1 Vocab

Question 1

Complex Numbers

Answer 1

A combination of a real and an imaginary number in the form a+bi, where a and b are real and I is the “unit imaginary number” square root of (-1)

Question 2

Cubed number

Answer 2

A number with an exponent of 3

Question 3

Cubed root

Answer 3

One of three equal factors (multiplication) of a number. It is the side length of a cube.

Question 4

Exponent

Answer 4

Tells you how many times the base number is multiplied to itself (used as a factor)

Question 5

Imaginary Numbers

Answer 5

A number that when squared gives a negative result.

i is the “unit imaginary number” square root of (-1)

Question 6

Integers

Answer 6

Positive or negative whole numbers are considered Integers

Question 7

Irrational numbers

Answer 7

A number that can Not be expressed as a ratio of two integers or as a repeating or terminating decimal. Ok or any square root that is not a perfect square number is considered irrational.

Question 8

Natural numbers

Answer 8

Counting numbers. No zero

Question 9

Perfect Cube

Answer 9

The result of using a who number in a multiplication three times.

Example: 3•3•3=27 so 27 is a cubed number.

Question 10

Radical symbol

Answer 10

The symbol used to represent the non-negative square root of a number.

Question 11

Radicand

Answer 11

The number under a radical symbol.

Question 12

Real numbers

Answer 12

All the numbers on the number line( including fractions and decimals)

Question 13

Repeating decimal

Answer 13

A decimal number that has digits that repeat forever.

Question 14

Rounding a number

Answer 14

Rounding means making a number simpler but keeping its value close to what it was. The result is less accurate, but easier to use. There are rules on how to round a number.

Question 15

Squared number

Answer 15

A number with the exponent of 2

Question 16

Square root

Answer 16

One of two equal factors (multiplication) of a number- it is the side length of a square.

Question 17

Terminating decimal

Answer 17

A decimal that stops?

Question 18

Truncating a number

Answer 18

A method of approximating a decimal by dropping all decimal places past a certain point without rounding. For example 3.14159265… can be truncated to 3.1415.
Note: if 3.14159265… were rounded to the same decimal place, the approximation would be 3.1416.

Question 19

Whole Number

Answer 19

Zero and all of the Natural Numbers

Question 20

Base of an exponent

Answer 20

A number that is raised to a power(exponent)