Free Printable REAL Numbers part -1

1.

$\sqrt[3]{-1}$

a)

$\pm1$

b)

1

c)

-1

d)

none of the above (imaginary number)

2.

The area of a square painting is $81\ cm^2$ . What is the length of one side?

a)

9

b)

-9

c)

40.5

d)

-40.5

3.

$\sqrt{\left(\frac{16}{81}\right)}\ \ =\ ?$

a)

$\frac{8}{27}$

b)

$\frac{8}{9}$

c)

$\frac{4}{9}$

d)

$\frac{4}{3}$

4.

A cube with side length s has a volume of 64 cubic units. What is the length of one side?

a)

4

b)

8

c)

16

d)

32

5.

Select the set with all perfect squares.

a)

-144, 9, 50, 75, 81, 100

b)

9, 50, 81, 100

c)

9, 50, 75, 81, 100

d)

9, 81, 100

6.

Which of the following is irrational?

a)

$\sqrt{49}$

b)

$\sqrt{50}$

c)

$\sqrt{81}$

d)

$\sqrt{121}$

7.

$\sqrt[3]{125}$

a)

5

b)

-5

c)

25

d)

-25

8.

$\sqrt[3]{-1000}$

a)

-10

b)

-100

c)

-500

d)

-20

9.

To find the square root of a number, you must divide it by 2.

a)

True

b)

False

10.

Cube Roots are the opposite of:

a)

Square Roots

b)

Cubing a number

c)

Squaring a number

d)

Multiplying a number

11.

Mary has a shed that has a volume of 216 ft cubed. What is the length of one side of Mary's shed?

a)

6

b)

14.7

c)

7

d)

-6

12.

Solve the equation:

$x^3=\ -64$

a)

$x=8$

b)

$x=\pm\ 8$

c)

$x=\pm\ 4$

d)

$x\ =\ -4$

13.

Solve the equation: $x^2=196$

a)

$x=\pm\ 14$

b)

$x=\pm\ 13$

c)

$x\ =\ \pm\ 5.8$

d)

$x=14$

14.

$\sqrt[3]{-729}$

a)

-9

b)

81

c)

243

15.

Which number is irrational?

a)

9.6

b)

$\sqrt[]{45}$

c)

$\sqrt[]{36}$

d)

300,000

16.

Which number is a rational number?

a)

1/4

b)

π

c)

$\sqrt[]{3}$

17.

Is the following number rational or irrational?

$\sqrt[]{7}$

a)

Rational

b)

Irrational

18.

Is the following number rational or irrational?

0.141414141414...

a)

Rational

b)

Irrational

19.

Is the following number rational or irrational?

-17.5

a)

Rational

b)

Irrational

20.

Is the following number rational or irrational?

$\frac{77}{3}$

a)

Rational

b)

Irrational

21.

Identify the rational numbers. (Select all that apply)

a)

$\sqrt{4}$

b)

$\pi$

c)

$3.5$

d)

$\sqrt{2}$

e)

$\frac{2}{3}$

22.

Identify the irrational numbers. (Select all that apply)

a)

$\sqrt{50}$

b)

2

c)

$\pi$

d)

2.3454128904

23.

$\sqrt{16}=?$

a)

8

b)

2

c)

4

d)

32

REAL Numbers part -1

Total questions: 23

Worksheet time: 13mins

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