Ready Math lesson 14

Which answer choice is equivalent to:

3(2x+8)

Select all that apply.

• 3x+20+2x+4+x

• 6x+24

• 6x+8

• 5x+11

• 6(x+4)

Tags

CCSS.6.EE.A.3

4h - 9(2h + 66)

• 2h -9 +66

• 4h - 18h + 66

• -14h - 594

• -14h + 18h + 594

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.2

Which of the following is equivalent to     -8 - 9(5 + 2x)?

• -5 - 2x
• -18x - 53
• -53 + 18x
• 18x - 53

Tags

CCSS.6.EE.A.3

21 - 8(v + 3) + 3 + 7v

• 15v

• v - 3

• -v

• v

Tags

CCSS.6.EE.A.3

-9(-10 + 8x) + 4x

• 90 – 68x

• 90 – 4x

• 19 – 4x

• –13x + 19

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.2

CCSS.6.EE.B.6

CCSS.6.EE.A.4

The side of a square is 2n - 4. Which expressions represent the perimeter of the square.

• 4(2n - 4)

• 8n - 4

• 2n + 2n + 2n + 2n - 4 - 4 - 4 - 4

• 8n - 16

• 4n - 8

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.2

CCSS.6.EE.B.6

Write an equivalent expression for 2(3x - 4) - 3(x + 2)

• 6x - 8 - 3x - 6

• 6x - 4 - 3x + 2

• 3x - 14

• 3x - 2

• 3x + 2

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.2

CCSS.6.EE.B.6

The perimeter of a regular pentagon is represented by the expression 40x - 30. Which expression will represent the length of one side?

• $\frac{40x\ -\ 30}{5}$

• $\frac{1}{5}\left(40x\ -\ 30\right)$

• $8x\ -\ 20$

• $-6\ +\ 8x$

• $5\left(40x\ -\ 30\right)$

Tags

CCSS.7.EE.A.1

CCSS.7.EE.B.3

CCSS.7.EE.B.4

The following expression was simplified.  Was a mistake made and if so which step?

 $7\ -\left(-8\ -\ 3x\right)\ +\ 10x$  

 $Step\ 1\ \ \ 7+8\ -\ 3x\ +\ 10x$  
 $Step\ 2\ \ \ \left(7\ +\ 8\right)\ +\ \left(-3x\ +\ 10x\right)$  
 $Step\ 3\ \ \ 15\ +7x$  

• Step 1

• Step 2

• Step 3

• The problem is simplified correctly.   

Tags

CCSS.6.EE.A.3

Collect like terms: 
4y + 8d - 2y + 3d

• 11d + 6y
• 11d + 2y
• 6y + 5d

Tags

CCSS.7.EE.A.1