ASVAB Math Knowledge Practice Test 380476 Results

Your Results Global Average
Questions 5 5
Correct 0 3.51
Score 0% 70%

Review

1

What is 8a7 - 4a7?

74% Answer Correctly
4
4a7
32a14
32a7
Solution

To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.

8a7 - 4a7 = 4a7

2

Which of the following statements about math operations is incorrect?

71% Answer Correctly

you can multiply monomials that have different variables and different exponents

you can subtract monomials that have the same variable and the same exponent

you can add monomials that have the same variable and the same exponent

all of these statements are correct
Solution

You can only add or subtract monomials that have the same variable and the same exponent. For example, 2a + 4a = 6a and 4a2 - a2 = 3a2 but 2a + 4b and 7a - 3b cannot be combined. However, you can multiply and divide monomials with unlike terms. For example, 2a x 6b = 12ab.

3

If AD = 29 and BD = 19, AB = ?

76% Answer Correctly
7
3
10
6
Solution

The entire length of this line is represented by AD which is AB + BD:

AD = AB + BD

Solving for AB:

AB = AD - BD
AB = 29 - 19
AB = 10

4

The dimensions of this cylinder are height (h) = 9 and radius (r) = 5. What is the volume?

62% Answer Correctly
180π
225π
128π
12π
Solution

The volume of a cylinder is πr2h:

v = πr2h
v = π(52 x 9)
v = 225π

5

The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?

68% Answer Correctly

lw x wh + lh

h x l x w

2lw x 2wh + 2lh

h2 x l2 x w2
Solution

A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.