The Real Numbers
Positive counting numbers are also called...
Natural Numbers
What is the definition of a number cubed?
Times it self 3 times
x * x * x
3/4
Rational, Real
Which numbers are perfect squares?
1, 2, 4, 6, 9, 12, 14, 16
1, 4, 9, 16
What is the name of this symbol?
sqrt
Square Root (or Radical Sign)
Real Numbers are divided into 2 main sets:
Rational and Irrational Numbers
23 = ?
8
sqrt(56)
Irrational and Real
92
81
What are the two square roots of 25?
5, -5
Rational Numbers are rational because they can be expressed as __________
Ratios (fractions)
-63 = ?
-216
–8
Integer, Rational, Real
If a square garden has an area of 225 square feet, what is the length of the side of the garden?
15 feet
Which of the following means to multiply a number by itself?
Squaring a number OR Taking the square root
Squaring a number
Zero is whole number but not a _____________ number.
Natural Number
3 sqrt(125
5
{4, 7, 18/2, 0}
Whole, Integer, Rational, Real
162
256
These roots are always rational.
perfect squares
The square root of a non perfect square is what type of number?
irrational
3 sqrt(64/8)
2
sqrt(-9
Imaginary or Not Real
sqrt529
23
All non-perfect square square roots belong to this subset of the Real Numbers.
Irrational Numbers