Unit Test #3

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

321.9 written in standard form is

A. 3.219 × 102
B. 3.219 × 10-2
C. 3.219 × 103
D. 3.219 × 100
Answer 1:

Q2:

(0.13)2=

A. 0.0169
B. 0.169
C. 0.26
D. 1.69
Answer 2:

Q3:

Find the square root of 0.09

A. 0.003
B. 0.03
C. 0.3
D. 8.1
Answer 3:

Q4:

Express the number 0.0129 in standard form.

A. 1.29 × 10-2
B. 1.29 × 10-1
C. 1.29 × 10-3
D. 1.29 × 102
Answer 4:

Q5:

Multiply (4 × 10-2) by (5 × 10-5), giving the answer in standard form.

A. 2 × 10-6
B. 2 × 10-5
C. 2 × 10-7
D. 2 × 1010
Answer 5:

Q6:

The reciprocal of 20 is

A. 0.05
B. 0.02
C. 0.2
D. 0.5
Answer 6:

Q7:

What is / are the square root(s) of (-4)2 ?

A. -4
B. -16 
C. 4
D. 4 or -4
Answer 7:

Q8:

What is the cube root of 125?

A. 25
B. 5
C. 42
D. 375
Answer 8:

Q9:

The first three prime numbers after 30 are:

A. 31, 33, 37
B. 37, 41, 43
C. 31, 37, 43
D. 31, 37, 41
Answer 9:

Q10:

Which of the following is a natural number?

A. -2.3
B. 5 
C. 0
D. 5.5
Answer 10: