Expressions Mastery Quiz

• 7

• 14

Answer explanation

The coefficient in the expression 7x^2 is 7, so the correct answer is 7.

Tags

CCSS.6.EE.A.2B

• 15

• 19

• 20

• 9

Answer explanation

To evaluate the expression 3x + 4 for x = 5, substitute x with 5, so the expression becomes 3(5) + 4 = 15 + 4 = 19. Therefore, the correct answer is 19.

Tags

CCSS.6.EE.A.2C

• 4

• -3

Answer explanation

The constant in the expression 4y - 3 is -3, as it is a term without a variable.

Tags

CCSS.6.EE.A.2B

Answer explanation

The correct expression for 'the sum of a number n and 9' is n + 9, so the correct answer is n + 9.

Tags

CCSS.6.EE.A.2A

• 8

• 3

Answer explanation

The term in the expression 8 + 3m is 3m, as it represents the variable term in the expression.

Tags

CCSS.6.EE.A.2B

• 8

• 14

• 10

• 4

Answer explanation

Substitute a = 7 into the expression: 2(7 - 3) = 2(4) = 8. Therefore, the correct answer is 8.

Tags

CCSS.6.EE.A.2C

• 9

• -5

Answer explanation

The variable in the expression 9k - 5 is k, as it represents an unknown value that can vary.

Tags

CCSS.6.EE.A.2B

Answer explanation

The correct expression for 'twice a number x decreased by 7' is 2x - 7, so the correct answer is 2x - 7.

Tags

CCSS.HSA-SSE.A.1A

Answer explanation

The expression represents 5 times the sum of 2n and 3, which is the correct answer choice.

Tags

CCSS.HSA-SSE.A.1A

• 12

• 3

• 6

• 24

Answer explanation

The expression is 4x/2. Substituting x=6, we get 4*6/2 = 24/2 = 12. Therefore, the correct answer is 12.

Tags

CCSS.6.EE.A.2C