Quiz about Identifying and Simplifying Expressions

Question 1

Simplify the expression:

9c + 12 + (-8) + (-5c)

Accepted Answer

4c + 4

Answer

14c + 20

Answer

4c + 20

Answer

8

Question 2

Simplify the expression:

a + c + 2a + 6c + a + 9a + c + a

Accepted Answer

14a + 8c

Answer

11a + 6c

Answer

13a + 8c

Answer

22

Question 3

Simplify the expression:

6p - 12 - 3p + 16

Accepted Answer

3p + 4

Answer

9p + 28

Answer

3p + (-28)

Answer

9p + 4

Question 4

Simplify the expression:

-7c - 12 - 5c - 1

Accepted Answer

-12c - 13

Answer

-25

Answer

12c + 13

Answer

-12c + 13

Question 5

Simplify the expression:

9a + 12 + (-8) + (-5a)

Accepted Answer

4a + 4

Answer

14a + 20

Answer

4a + 20

Answer

8

Question 6

List the constant terms from the expression below:

-12p + 3 + 19 + 17p

Accepted Answer

3, 19

Answer

-12, 17

Answer

-12, 3, 19, 17

Answer

12, 3, 19, 17

Question 7

Simplify the expression:

-5a + 4 + 3a + 6

Accepted Answer

-2a + 10

Answer

8a + 10

Answer

2a + 10

Answer

8

Question 8

Simplify the expression:

9c + 12 - 7c

Accepted Answer

2c + 12

Answer

16c + 12

Answer

28c

Answer

11c

Question 9

Select the first step that you would do to simplify this expression: 9c - 16 - 4c + 20

Accepted Answer

rewrite the expression as addition

Answer

reorder the terms

Answer

combine the like terms

Answer

substitute

Question 10

Trenton simplified the following expression. What did he do wrong?

$$-7r\ +\ r^2\ +\ 15\ +\ r\ -\ 18\ =\ -5r\ -3$$

Accepted Answer

$$r^2$$ should not be combined with -7r and r because it does not have the same exponent; the correct simplified expression is $$r^2\ -\ 6r\ -3$$

Answer

he combined the constant terms incorrectly; the correct simplified expression is -5r + 33

Answer

he should have combined all of the terms; the correct simplified expression is -8

Answer

he should have combined all of the terms; the correct simplified expression is 49

Question 11

Write an expression for the following: Twice a number minus five.

Accepted Answer

2a - 5

Answer

a - 5

Answer

2a + 5

Answer

1/2a + 5

Question 12

Mary bought lunch at Jimmy's Cafe. She purchased some chicken fingers (c) for $1.25 each and a soda for $2.50. Write an expression for the situation.

Accepted Answer

1.25c + 2.50

Answer

2.50c - 1.25

Answer

2.50c + 1.25

Answer

1.25c - 2.50

Question 13

Write an expression for the following:

-1/2a - 7

Accepted Answer

Negative one half a number minus seven.

Answer

One half of a number minus seven.

Answer

Negative one half plus seven.

Answer

One half of a number plus seven.

Question 14

Terms that have the same exponent and the same variable are called:

Accepted Answer

like terms

Answer

coefficients

Answer

terms

Answer

constant terms

Question 15

Simplify the expression: 7+3(1 - 2x)

Accepted Answer

10 - 6x

Answer

21 - 6x

Answer

10 - 2x

Answer

10 - 20x

Identifying and Simplifying Expressions

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