Math ( Substitute given values to evaluate expression)

Evaluate the expression: x + 2 when x = 6

• 8
• 4
• 12
• 10

If a = 4 and b = 6, what is the value of 3a + 5b?

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What is the first thing you do when evaluating an expression

• Substitute value in for the variable

• Combine like terms

• Parenthesis

3x + 8   if x = 2

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• 15
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Write an algebraic expression for "12 more than number". 

• x + 12
• 12x
• x - 12

Evaluate expression if a=3 and b=4

4b-5a

• 2

• 1

• -8

• 8

Evaluate expression if a=3 and b=4

18 ÷ 2a

• 3

• 2.25

• 27

• 9

Using the steps shown, Heather tried to simplify this expression. What was her first mistake?

• Step 1

• Step 2

• Step 3

• Step 4

Fred catches 25 fish. Then he releases 10 fish and catches 8 more. Which expression is correct. 

•  $3\times\left(15-6\right)$  

•  $15-6$  

•  $25-\left(10+8\right)$  

•  $\left(25-10\right)+8$  

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

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• 44
• 4