ASVAB Arithmetic Reasoning Practice Test 498655 Results

Your Results Global Average
Questions 5 5
Correct 0 3.11
Score 0% 62%

Review

1

What is \( \frac{45\sqrt{12}}{9\sqrt{6}} \)?

71% Answer Correctly
5 \( \sqrt{\frac{1}{2}} \)
2 \( \sqrt{5} \)
5 \( \sqrt{2} \)
\(\frac{1}{5}\) \( \sqrt{\frac{1}{2}} \)

Solution

To divide terms with radicals, divide the coefficients and radicands separately:

\( \frac{45\sqrt{12}}{9\sqrt{6}} \)
\( \frac{45}{9} \) \( \sqrt{\frac{12}{6}} \)
5 \( \sqrt{2} \)


2

What is (z5)4?

79% Answer Correctly
z20
5z4
4z5
z9

Solution

To raise a term with an exponent to another exponent, retain the base and multiply the exponents:

(z5)4
z(5 * 4)
z20


3

Convert 0.0008357 to scientific notation.

62% Answer Correctly
8.357 x 104
83.57 x 10-5
8.357 x 10-4
8.357 x 10-3

Solution

A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:

0.0008357 in scientific notation is 8.357 x 10-4


4

\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?

55% Answer Correctly

commutative property for multiplication

distributive property for division

distributive property for multiplication

commutative property for division


Solution

The distributive property for division helps in solving expressions like \({b + c \over a}\). It specifies that the result of dividing a fraction with multiple terms in the numerator and one term in the denominator can be obtained by dividing each term individually and then totaling the results: \({b + c \over a} = {b \over a} + {c \over a}\). For example, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).


5

Which of the following statements about exponents is false?

47% Answer Correctly

b0 = 1

all of these are false

b1 = 1

b1 = b


Solution

A number with an exponent (be) consists of a base (b) raised to a power (e). The exponent indicates the number of times that the base is multiplied by itself. A base with an exponent of 1 equals the base (b1 = b) and a base with an exponent of 0 equals 1 ( (b0 = 1).