Mod 2 Real Numbers and Roots

The Real Numbers

100

Positive counting numbers are also called...

Natural Numbers

200

Real Numbers are divided into 2 main sets:

Rational and Irrational Numbers

300

Rational Numbers are rational because they can be expressed as __________

Ratios (fractions)

400

Zero is whole number but not a _____________ number.

Natural Number

500

The square root of a non perfect square is what type of number?

irrational

Cubes

100

What is the definition of a number cubed?

Times it self 3 times

x * x * x

200

2³ = ?

8

300

-6³ = ?

-216

400

3 sqrt(125

5

500

3 sqrt(64/8)

2

Classify Numbers

100

3/4

Rational, Real

200

sqrt(56)

Irrational and Real

300

–8

Integer, Rational, Real

400

{4, 7, 18/2, 0}

Whole, Integer, Rational, Real

500

sqrt(-9

Imaginary or Not Real

Squares

100

Which numbers are perfect squares?

1, 2,  4, 6, 9, 12, 14, 16

1, 4, 9, 16

200

9²

81

300

If a square garden has an area of 225 square feet, what is the length of the side of the garden?

15 feet

400

16²

256

500

sqrt529

23

Definitions

100

What is the name of this symbol?

sqrt

Square Root (or Radical Sign)

200

What are the two square roots of 25?

5, -5

300

Which of the following means to multiply a number by itself?

Squaring a number    OR    Taking the square root

Squaring a number

400

These roots are always rational.

perfect squares

500

All non-perfect square square roots belong to this subset of the Real Numbers.

Irrational Numbers