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10.2.notebook
1
January 10, 2017
Jan 228:11 AM
Module 10 lesson 2
Evaluating Expressions
Objective: Evaluate expressions at specific values of their variables
Jan 228:14 AM
Evaluate:
finding the value of an expression
Solve
Jan 228:16 AM
1. x 9 x = 15
2. 16 n = 8
n
3. 0.5y y = 1.4
4. 6k k = 1/3
USE THE ORDER OF OPERATIONS!!!
Jan 228:21 AM
complete 1 4 page 270
Jan 228:23 AM
1. 4 (x 4) x = 7
2. 4x 4 x = 7
3. w x + y w = 6 x =5 y = 3
Feb 1112:40 PM
1/ 9
Additional Example 1
Evaluating Expressions
A
Evaluate each expression for the given value of the variable.
b – 7; b = 16
B 28m–– ; m = 4
10.2.notebook
2
January 10, 2017
Feb 1112:40 PM
2/5
Additional Example 1
Evaluating Expressions
C
Evaluate each expression for the given value of the variable.
0.2t; t = 1.6
D 8s: s = 1 2 ––
2/ 9
Feb 1112:40 PM
Additional Example 2
A
Evaluate each expression for the given value of the variable.
B
Evaluating Expressions
6y – 6; y = 9
6(y – 6); y = 9
3/ 9
Feb 1112:40 PM
4/ 9
Additional Example 2
C
Evaluate each expression for the given value of the variable.
D
Evaluating Expressions
y2 – 2y; y = 7
E 4y – 3; y = 7
n – y + x; n = 5; y = 3; x = 4
Feb 1112:40 PM
5/ 9
Additional Example 3
Evaluating Expressions
The expression 3.3m gives the number of feet in m meters. Use the expression to find the number of feet that is equivalent to 400 meters.
Feb 1112:40 PM
6/ 9
Lesson Quiz
Evaluate each expression for the given value(s) of the variable(s).
Evaluating Expressions
1. a + 6; a = 2
2. 16g ; g = 4__
Feb 1112:40 PM
Lesson Quiz
Evaluate each expression for the given value(s) of the variable(s).
3. 7(m – 6); m = 8
Evaluating Expressions
4. 7m – 6; m = 8
7/ 9
10.2.notebook
3
January 10, 2017
Feb 1112:40 PM
Lesson Quiz
Evaluate each expression for the given value(s) of the variable(s).
5. s – k + x; s = 7, k = 4, x = 6
Evaluating Expressions
8/ 9
Feb 1112:40 PM
Lesson Quiz
6. The expression 4g gives the number of quarts in g gallons. How manyquarts are there in 4 gallons?
Evaluating Expressions
9/ 9
Feb 1112:40 PM
Additional Example 1
Evaluating Expressions
Evaluate each expression for the given value of the variable.
9
7
A b – 7; b = 16
B 28m–– ; m = 4
1/ 9
Feb 1112:40 PM
Additional Example 1
Evaluating Expressions
C
Evaluate each expression for the given value of the variable.
0.2t; t = 1.6
D
0.32
4
8s: s = 1 2 ––
2/ 9
Feb 1112:40 PM
Additional Example 2
A
Evaluate each expression for the given value of the variable.
B
Evaluating Expressions
6y – 6; y = 9
18
48
6(y – 6); y = 9
3/ 9
Feb 1112:40 PM
Additional Example 2
Evaluate each expression for the given value of the variable.
Evaluating Expressions
6
35
25
C
D y2 – 2y; y = 7
E 4y – 3; y = 7
n – y + x; n = 5; y = 3; x = 4
4/ 9
10.2.notebook
4
January 10, 2017
Feb 1112:40 PM
Additional Example 3
Evaluating Expressions
1,320 feet
The expression 3.3m gives the number of feet in m meters. Use the expression to find the number of feet that is equivalent to 400 meters.
5/ 9
Feb 1112:40 PM
Lesson Quiz
Evaluate each expression for the given value(s) of the variable(s).
1. a + 6; a = 2
Evaluating Expressions
2. 16g ; g = 4__
8
4
6/ 9
Feb 1112:40 PM
Lesson Quiz
Evaluate each expression for the given value(s) of the variable(s).
Evaluating Expressions
14
50
3. 7(m – 6); m = 8
4. 7m – 6; m = 8
7/ 9
Feb 1112:40 PM
Lesson Quiz
Evaluate each expression for the given value(s) of the variable(s).
5. s – k + x; s = 7, k = 4, x = 6
Evaluating Expressions
9
8/ 9
Feb 1112:40 PM
Lesson Quiz
6. The expression 4g gives the number of quarts in g gallons. How manyquarts are there in 4 gallons?
Evaluating Expressions
16 quarts
9/ 9
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