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Rational/Irrational
Test Description: Rational/Irrational practice
Instructions: Answer all questions to get your test result.
1) 12.05
A
Is rational because it ends.
B
Is irrational because it is an integer.
C
Is irrational because it ends.
D
Is rational because it does not end.
2) √25
A
Is rational because it is a perfect square.
B
Is rational because it is an imperfect square.
C
Is irrational because it is an imperfect square
D
Is irrational because it is a perfect square.
3) Which is a repeating decimal?
A
3/16
B
-3/5
C
3/7
D
-3/9
4) 0.11011100....
A
Is irrational because it repeats a pattern.
B
Is irrational because it does not repeat a pattern and doesn't end.
C
Is rational because it does not repeat a pattern and doesn't end.
D
Is rational because it repeats a pattern.
5) Rational Numbers will always be Whole Numbers
A
True
B
False
6) Which number is NOT a rational number?
A
20/3
B
-17.50
C
-15
D
square root of 7
7) Which set contains only rational numbers?
A
√ 7 , 1 . 75 , 1/5 , 51
B
√ 5 , − 5 , 1/3 , 10 . 8
C
√ 4 , 2/3 , 6 . 875 , − 9
D
√ 3 , 4/5 , 13 . 58619 . . . , − 8
8) Which choice is an irrational number?
A
(4^3)
B
√ 64
C
- √ 16
D
√ (36+4)
9) 2 5/9 (Rational or Irrational Number)
A
Rational
B
Irrational
10) Order the rational numbers in descending order
A
20, 12, 5, -21, -33
B
5, 12, 20, -21, -33,
C
-33, -21, 5, 12, 20
D
20, -33, -21, 12, 5
11) Which of the following is correctly written in scientific notation?
A
1.2 x 10*2
B
12 x 10*2
C
.12 x 10*2
D
12 x 2*2
12) Which statement is NOT true about rational numbers?
A
The sum of two rational numbers is also a rational number.
B
The product of two rational numbers is also a rational number.
C
The opposite of a rational number is also a rational number
D
0 is not a rational number
13) Irrational numbers are _____________.
A
terminating decimals
B
repeating decimals
C
decimals that never end or repeat
D
ratios
14) When would you use scientific notation?
A
Both 1 2
B
When dealing with very small numbers
C
Neither 1 nor 2
D
When dealing with very large numbers
15) Rational numbers include everything except
A
non-repeating, never ending decimals
B
decimals
C
integers
D
fractions
16) convert 673,000 to scientific notation
A
6730 x 10^5
B
6.73 x 10^5
C
67.3 x 10^4
D
6.73 x 10^ -5
17) Which of the following fractions would be a repeating decimal
A
none of the above
B
1/3
C
5/8
D
4/5
18) What is 35,000 in scientific notation?
A
3.5 x 10^3
B
3.5 x 10^4
C
35 x 10^3
D
35 x 10^-3
19) How is 0.00165 written in scientific notation.
A
1.65 x 10^(-3)
B
165 x 10^(-5)
C
0.165 x 10^(-2)
D
16.5 x 10^(-4)
20) The diameter of a carbon atom is 0.000000874 m. What is this number in scientific notation?
A
8.74 x 10^-7
B
8.74 x 10^7
C
87.4 x 10^6
D
87.4 x 10^-6
*select an answer for all questions
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