Year 8 - Substitution into Expression (II)

My teacher gives four pencils to new students. There are x new students.

• x + 4
• x/4
• 4x
• 4-x

Which expression is equivalent to 4j + 7j?

• (4 + 7)j
• (4 * 7)j
• 4 + 7(j)
• (4 + 7)(2j)

Which expression does not equal 21?

• 3x  when  x = 7
• 42/y when  y = 2
• 18 + e   when e = 4
• 30 - j   when j = 9

Tags

CCSS.6.EE.B.5

Are these two expressions equivalent?  Use substitution.  
4x + 3    and        9x - 20   if x= 4

• Yes, both equal
• No, not equal

Tags

CCSS.6.EE.A.2C

Which of these expressions is equal to 36?

• 12y  if y = 4
• 45 - x   if x = 11
• 72/r   if r = 2
• x + x + x + x    if x = 8

Tags

CCSS.6.EE.A.2C

Find the value of this expression if x = 8
x² + 12 - 2x 

• 66
• 60
• 56
• 12

Tags

CCSS.6.EE.A.2C

Which of these expressions is equal to 40 if w =5 ?

• w + w + w + w + w
• 50/w
• 33 + w 
• 10 (w - 1)

Tags

CCSS.6.EE.B.5

Find the value of this expression if c = 4
14 + 3c² - 15 + c

• 37
• 51
• 41
• 121

Tags

CCSS.6.EE.A.2C

Which of these expressions has the highest value if x =3 ?

• x³
• 11x
• 60 - 10x
• 5.5 + x + 12

Tags

CCSS.6.EE.A.2C

Simplify: -5x + 1

when x = 12

• 59

• -59

• 60

• -60

Tags

CCSS.6.EE.A.2C