Question

What I Know

Choose the letter of the best answer. Write the chosen letter on a separate sheet of
paper.
1. Which of the following below are like terms?
A. 2x, 3x, 4x, 5x
B. −4a, −3a, −2a, ab
C. 3x, x
2
, x
3
, x
4
D. xy, 3xy, 5y, 4z
2. Which of the following would result to a sum of 5ab?
A. 2a + 3b
B. 4a + b
C. 2ab + 3ab
D. 3a + 2b
3. What is the simplified term of 3x + x – 2x + 5x?
A. 6x
B. 7x
C. 8x
D. 9x
4. What must be subtracted from 8a + 3 to make a difference of 5a + 1?
A. 3a + 2
B. 3a – 2
C. 3a + 4
D. 3a – 4
5. Mark saved 15x + 8 from his allowance. How much did he have after buying
a gift worth 10x + 3 for his mother’s birthday?
A. 5x − 5
B. 5x + 5
C. 5x − 11
D. 5x + 11
6. Which of the following illustrates the law a

n = a ∙ a ∙ a ∙ a ... ∙ a (n times)?

A. x
5 = x ∙ x ∙ x ∙ x ∙ x
B. 2
3 = 3 ∙ 3
C. 3
4 = 3 ∙ 4
D. x
5 = x ∙ 5

7. Which of the following statements illustrates the law: a
n
∙ a
m = a
n+m?

A. 2
3
∙ 3
4 = 6
7
B. 3
3
∙ 2
5 = 6
15

C. 2
3
∙ 2
4 = 2
12

D. 3
2
∙ 3
4 = 3
6
8. hich of the following is true?
A. 5
2 + 5
3 = 5
5

B. 2
2
2
3 =
1
2
C. (3
2
)
9 = 9
18
D. (4
3)
2 = 4
5

CO_Q2_Mathematics 7_Module 5

3

9. Divide (4x

2 − 24x + 35) ÷ (2x − 5).
A. 2x – 7
B. 2x + 12
C. 2x – 12
D. 2x + 7
10.The length of the rectangle is 2x – 3 and its width is equal to x – 1. Find the
area of the rectangle.
A. x – 2
B. 3x – 4
C. 2x2 – x – 3
D. 2x2 – 5x + 3
11.Which of the following is the result when (3a
2b
3
) is multiplied to (4a
3b
2
)?

A. 7a
5b
5
B. 7a
6b
6
C. 12a
6b
6
D. 12a
5b
5

12.Which of the following describes the product of (b + 5)(b + 5)?
A. a monomial
B. a binomial
C. a trinomial
D. a multinomial
13.Which of the following is the result when (x + 7) is multiplied to (x + 4)?
A. x
2 + 11x + 28
B. x
2 + 28x + 11
C. x
2 + 7x + 28
D. x
2 + 8x + 28

14.Divide 12x
3y
4 + 9x
2y
3 − 3x
5y
2 by 3x
2y.

A. 6x
2y
4
B. 6xy3 + y
2 − x
3y

C. 3x
4 + 2y
4
D. 4xy3 + 3y
2 − x
3y
15.The product of 4x
2y
5 and a certain monomial is 28x
7y
9
z
2
. What is the

missing factor?
A. 7x
5y
4
B. 7x
9y
14z
2
C. 7x
5y
2
z
2
D. 7x
5y
4
z
2

Answer 1

Please format questions so that they are easier to read. I can't be sure these answers are correct since I don't understand how to read a few of the options.

Explanation:

1. Which of the following below are like terms?

A. 2x, 3x, 4x, 5x

2. Which of the following would result to a sum of 5ab?

A. C. 2ab + 3ab

3. What is the simplified term of 3x + x – 2x + 5x?

B. 7x

4. What must be subtracted from 8a + 3 to make a difference of 5a + 1?

A. 3a + 2

5. Mark saved 15x + 8 from his allowance. How much did he have after buying a gift worth 10x + 3 for his mother’s birthday?

B. 5x + 5

6. Which of the following illustrates the law an = a ∙ a ∙ a ∙ a ... ∙ a (n times)?

a

n

∙ a

m = a

n+m?

A. 2

3

∙ 3

4 = 6

7

B. 3

3

∙ 2

5 = 6

15

C. 2

3

∙ 2

4 = 2

12

D. 3

2

∙ 3

4 = 3

6

I have no idea how to interpret these numbers.

Same with #7

===

9. Divide (4x

2 − 24x + 35) ÷ (2x − 5).

Is this supposed to read:

(4x ^2 − 24x + 35) ÷ (2x − 5)?

If so,

= (2x-7)

(2x-7)(2x-5) = 4x^2 -14x -10x + 35

10. The length of the rectangle is 2x – 3 and its width is equal to x – 1. Find the area of the rectangle.

D. 2x2 – 5x + 3

(2x-3)(x-1) = 2x^2 -5x + 3

11.Which of the following is the result when (3a

2b

3

) is multiplied to (4a

3b

2

)?

Is this supposed to be "when (3a 2b ^3 ) is multiplied to

(4a 3b ^2 )?" If so,

D. 12a ^5b^ 5 [Insure that the exponents are marked as such, by using the "^" symbol. 12a ^5b^ 5 is not the same as 12a5b5, which would reduce to 300ab, as written]

12.Which of the following describes the product of (b + 5)(b + 5)?

B. a binomial

13.Which of the following is the result when (x + 7) is multiplied to (x + 4)?

A. x ^2 + 11x + 28

14.Divide 12x [I can't decipher the expressions]

3y

4 + 9x

2y

3 − 3x

5y

2 by 3x

2y.

Sorry, the last section is too difficult to read. I hope what I was able to interpret will help.