STEM BW34-3Wednesday6th

Describe and correct the error in evaluating the expression when m = 10
3m - 6 = 3 ⋅10 - 6
= 3 ⋅ 4
= 12

• 3m means to add;7
• Multiplication should be performed first; 24

Evaluate the expression when a=4,  b=3, and  c=10
c² - ab

• 93
• 13
• 88
• 22

Tags

CCSS.6.EE.A.2C

Which of the following expressions is NOT equivalent to the others? 

•  3(5a + 10b)
• 5(3a + 6b)
• 2(5a + 15b)
• 15a + 30b

Tags

CCSS.6.EE.A.4

Which of the following is not a solution of 5x ≥ 35? 

• 7
• 7 ⅕
• 6
• 8

Tags

CCSS.6.EE.B.5