Evaluating Expression for Given Replacement Values

Math 6 NOTES (6.3)

Name:_______________________________

Evaluating Expression for Given Replacement Values

To evaluate an algebraic expression, replace the variable or variables with known values and then use the order of operations to solve.

Evaluate each expression if:

x = 5 and y = 6.

x + y ? 9

3x + 2y

Replace: __________________________ Evaluate: __________________________

__________________________

Replace: __________________________ Evaluate: __________________________

__________________________

Evaluate each expression if: 1) 6m ? 3k

k = 2, m = 7, n = 4. 2)

2

3) m + |2m - k|

Evaluate each expression if: 4) 6a ? 4b

a = 5, b = 3, and c = 4. 5) ( + )

6) c + (a2 + b) ? 15

Evaluate each expression if: 7) 5x + 2x - y

x = 5 and y = 8. 8) (- ) +

9) (y2 + x) ? x

Math 6 PRACTICE (6.3)

Evaluate each expression if x = 6, y = 12, and z = 4.

1)

2+

2) xy ? z2

4) 5x + |y ? z|

5) z + 32

Evaluate each expression if m = 7, k = 2, and n = 4

7) 2m ? 5k

8)

3)

2-2

2

6) 2y - |x + z|

9) n + (k + 5m)

10) 5n - |k + n|

11) m + k2

12)

3+

Evaluate each expression if x = 6, y = 3, and z = 1

13) 3x + 7y

14)

3

15) x ? (z + y)

16) x + z2

17) 2x - |z + y|

18) 3+

Math 6 HW (6.3)

Name ______________________________

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