Evaluating expressions and Properties of operations

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Presentation transcript:

Evaluating expressions and Properties of operations Algebra Practice Evaluating expressions and Properties of operations

x + 8.8 = 15 Is 6.2 a solution for the equation?

6.2 + 8.8 = 15 Is 6.2 a solution for the equation? yes ANSWER 6.2 + 8.8 = 15 Is 6.2 a solution for the equation? yes

𝑦 4 = -32 Is -8 a solution for the equation?

−8 4 = -2 not -32 Is -8 a solution for the equation? No ANSWER −8 4 = -2 not -32 Is -8 a solution for the equation? No

8x + 4 = 76 Is 9 a solution for the equation?

8 × 9 + 4 = 76 Is 9 a solution for the equation? Yes ANSWER 8 × 9 + 4 = 76 Is 9 a solution for the equation? Yes

-10 = 2n - 20 Is 5 a solution for the equation?

-10 = 2(5) - 20 Is 5 a solution for the equation? Yes ANSWER -10 = 2(5) - 20 Is 5 a solution for the equation? Yes

𝑦 −6 4 = 3.5 Is 20 a solution for the equation?

20 −6 4 = 3.5 Is 20 a solution for the equation? Yes ANSWER 20 −6 4 = 3.5 Is 20 a solution for the equation? Yes

36 𝑥 + (-12) = 21 Is -4 a solution for the equation?

36 −4 + (-12) = -21 not 21 Is -4 a solution for the equation? No ANSWER 36 −4 + (-12) = -21 not 21 Is -4 a solution for the equation? No

Distributive Property Practice Simplify each expression using the Distributive Property.

2(x + 4)

ANSWER 2x + 8

4(y + 3)

ANSWER 4y + 12

(2x + 1)4

ANSWER 8x + 4

2(x - 9)

ANSWER 2x - 18

2(x + 5) + 2(x + 5)

ANSWER 2x + 10 + 2x + 10 4x + 20

7(x + 5) + 3(2x + 2)

Identifying Equivalent Expressions

Which expression is equivalent to x + 5(3)?

ANSWER Which expression is equivalent to x + 5(3)? 5(3) – x

Which expression is equivalent to 3 × (9 × 7)? (3 × 9) × 7 3 + (9 + 7) (3 × 9) + 7 3(9 + 7)

ANSWER Which expression is equivalent to 3 × (9 × 7)? (3 × 9) × 7 3 + (9 + 7) (3 × 9) + 7 3(9 + 7)

Which expression is equivalent to 3(2 + 9)? 6 + 9 6 + 27 5 + 27 3 + 2 + 3 + 9

ANSWER Which expression is equivalent to 3(2 + 9)? 6 + 9 6 + 27 5 + 27 3 + 2 + 3 + 9