7th Grade Evaluating Expressions

Evaluate 4y  if       y = 3

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Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.6

What would be the second step in this problem? (3 - 4) 9 + 3 

• parenthesis

• multiplication

• addition

• subtraction

3x + 8   if x = 2

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Evaluate 2a + 4b 
if a = 10     and    b = 6

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Evaluate 2r + 1      if   r = 3

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The difference between an equation and and expression is:

• An equation has an equal sign with an answer, and an expression doesn't.

• There is no difference.

• An expression is like a complete sentence, and equation is similar to a sentence fragment.

A letter that represents a unknown number is called a _____.

• variable

• coefficient

• constant

• term

evaluate bc + 5a  
when  a = 3, b = 4, and c = -6

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• -38
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If y= -3 --> Evaluate 4y+ 2

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• -14

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If g= -3 and h=10 --> Evaluate h − g

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• -7

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