ASVAB Arithmetic Reasoning Practice Test 689540 Results

Your Results Global Average
Questions 5 5
Correct 0 3.21
Score 0% 64%

Review

1

Which of the following statements about exponents is false?

47% Answer Correctly

b1 = b

all of these are false

b1 = 1

b0 = 1


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).


2

What is \( \frac{6}{8} \) + \( \frac{5}{12} \)?

60% Answer Correctly
1 \( \frac{5}{14} \)
1 \( \frac{7}{12} \)
1 \( \frac{8}{24} \)
1\(\frac{1}{6}\)

Solution

To add these fractions, first find the lowest common multiple of their denominators. The first few multiples of 8 are [8, 16, 24, 32, 40, 48, 56, 64, 72, 80] and the first few multiples of 12 are [12, 24, 36, 48, 60, 72, 84, 96]. The first few multiples they share are [24, 48, 72, 96] making 24 the smallest multiple 8 and 12 share.

Next, convert the fractions so each denominator equals the lowest common multiple:

\( \frac{6 x 3}{8 x 3} \) + \( \frac{5 x 2}{12 x 2} \)

\( \frac{18}{24} \) + \( \frac{10}{24} \)

Now, because the fractions share a common denominator, you can add them:

\( \frac{18 + 10}{24} \) = \( \frac{28}{24} \) = 1\(\frac{1}{6}\)


3

Simplify \( \frac{32}{52} \).

77% Answer Correctly
\( \frac{10}{17} \)
\( \frac{5}{17} \)
\( \frac{8}{13} \)
\( \frac{2}{3} \)

Solution

To simplify this fraction, first find the greatest common factor between them. The factors of 32 are [1, 2, 4, 8, 16, 32] and the factors of 52 are [1, 2, 4, 13, 26, 52]. They share 3 factors [1, 2, 4] making 4 their greatest common factor (GCF).

Next, divide both numerator and denominator by the GCF:

\( \frac{32}{52} \) = \( \frac{\frac{32}{4}}{\frac{52}{4}} \) = \( \frac{8}{13} \)


4

Convert 0.0009201 to scientific notation.

62% Answer Correctly
9.201 x 105
9.201 x 104
9.201 x 10-4
0.92 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:

0.0009201 in scientific notation is 9.201 x 10-4


5

What is the greatest common factor of 32 and 36?

77% Answer Correctly
12
4
23
20

Solution

The factors of 32 are [1, 2, 4, 8, 16, 32] and the factors of 36 are [1, 2, 3, 4, 6, 9, 12, 18, 36]. They share 3 factors [1, 2, 4] making 4 the greatest factor 32 and 36 have in common.