ASVAB Arithmetic Reasoning Practice Test 896340 Results

Your Results Global Average
Questions 5 5
Correct 0 3.17
Score 0% 63%

Review

1

What is \( 6 \)\( \sqrt{48} \) - \( 3 \)\( \sqrt{3} \)

38% Answer Correctly
18\( \sqrt{16} \)
21\( \sqrt{3} \)
3\( \sqrt{16} \)
18\( \sqrt{48} \)

Solution

To subtract these radicals together their radicands must be the same:

6\( \sqrt{48} \) - 3\( \sqrt{3} \)
6\( \sqrt{16 \times 3} \) - 3\( \sqrt{3} \)
6\( \sqrt{4^2 \times 3} \) - 3\( \sqrt{3} \)
(6)(4)\( \sqrt{3} \) - 3\( \sqrt{3} \)
24\( \sqrt{3} \) - 3\( \sqrt{3} \)

Now that the radicands are identical, you can subtract them:

24\( \sqrt{3} \) - 3\( \sqrt{3} \)
(24 - 3)\( \sqrt{3} \)
21\( \sqrt{3} \)


2

Which of the following is an improper fraction?

70% Answer Correctly

\({2 \over 5} \)

\({7 \over 5} \)

\({a \over 5} \)

\(1 {2 \over 5} \)


Solution

A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.


3

Convert 4,375,000 to scientific notation.

62% Answer Correctly
43.75 x 105
4.375 x 106
4.375 x 10-5
4.375 x 105

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:

4,375,000 in scientific notation is 4.375 x 106


4

What is -4x5 x 8x5?

75% Answer Correctly
-32x5
4x5
-32x10
4x25

Solution

To multiply terms with exponents, the base of both exponents must be the same. In this case they are so multiply the coefficients and add the exponents:

-4x5 x 8x5
(-4 x 8)x(5 + 5)
-32x10


5

Ezra loaned Christine $1,500 at an annual interest rate of 5%. If no payments are made, what is the total amount owed at the end of the first year?

71% Answer Correctly
$1,575
$1,515
$1,545
$1,635

Solution

The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:

interest = annual interest rate x loan amount

i = (\( \frac{6}{100} \)) x $1,500
i = 0.05 x $1,500

No payments were made so the total amount due is the original amount + the accumulated interest:

total = $1,500 + $75
total = $1,575