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  • 5 Minute Check Complete on the back of your homework. 1. 9 + 12 - 15 2. (9 + 2) x 6 - 5 3. 26 + 6² ÷ 4 4. 22 ÷ 2 x 3²
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5 Minute Check Complete on the back of your homework. 1. 9 + 12 - 15 2. (9 + 2) x 6 - 5 3. 26 + 6² ÷ 4 4. 22 ÷ 2 x 3²

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Tuesday, Oct 30

5 Minute CheckComplete on the back of your homework. 1. 9 + 12 - 15

2. (9 + 2) x 6 - 5

3. 26 + 6 4

4. 22 2 x 35 Minute CheckComplete on the back of your homework. 1. 9 + 12 - 15

5 Minute CheckComplete on the back of your homework. 1. 9 + 12 15 21 15 6

5 Minute CheckComplete on the back of your homework. 2. (9 + 2) x 6 - 55 Minute CheckComplete on the back of your homework. 2. (9 + 2) x 6 5 11 x 6 -5 66 -5 61 5 Minute CheckComplete on the back of your homework. 3. 26 + 6 4

5 Minute CheckComplete on the back of your homework. 3. 26 + 6 4 26 + 36 4 26 + 9 35

5 Minute CheckComplete on the back of your homework. 4. 22 2 x 35 Minute CheckComplete on the back of your homework. 4. 22 2 x 3 22 2 x 9 11 x 9 99 Wednesday, Nov 20Lesson 6.3

Algebra: Variables and ExpressionsAlgebra: Variables and ExpressionsObjective: To find the value of expressions using the order of operations.

Algebra: Variables and ExpressionsAt the end of this lesson you should be able to answer the following question.

How are numerical expressions and algebraic expressions different?

Algebra: Variables and ExpressionsAlgebra is a language of symbols including variables.

Algebra: Variables and ExpressionsAlgebra is a language of symbols including variables.

A variable is a symbol, usually a letter, used to represent a number.

Algebra: Variables and ExpressionsAlgebraic expressions contain at least one variable and at least one operation. e.g. n + 2

Algebra: Variables and ExpressionsTo solve an algebraic expression rewrite the expression, substituting the variable with the number. Evaluate 16 + b, if b = 25

16 + 25 = 41

This is the answer.

Algebra: Variables and ExpressionsThe number of steps in the answer is determined by the number of operation in the expression. Evaluate 16 + b, if b = 25

16 + 25 = 41

Since there is one operation , there is on step (or line) in the answer.

Algebra: Variables and ExpressionsEvaluate x - y, if x = 64 and y = 27

Do this on your own.

Algebra: Variables and ExpressionsEvaluate x - y, if x = 64 and y = 27

64 27 = 37

Algebra: Variables and Expressions 1Evaluate 6x , if x = 2

Do this on your own.

Remember, if there is no operation written it is assumed to be multiplication.

Algebra: Variables and Expressions 1Evaluate 6x , if x = 2

1 66 2 = 2 = 3

Algebra: Variables and ExpressionsIn an expression with more than one operation, use the order of operations to solve.

Remember - The number of steps in the answer is determined by the number of operations in the expression.

Algebra: Variables and Expressions Evaluate 6t + 4, if t = 3

6 3 + 4 = rewrite the expression with numbers 18 + 4 = 22 rewrite the expression, solving the first operation. The last step should only have one operation. Algebra: Variables and Expressions 1Evaluate 4x, if x= 8

Do this on your own. Algebra: Variables and Expressions 1Evaluate 4x, if x= 8

14 (8) =

1 4 14 64 = 64 = 16Algebra: Variables and Expressions 1Evaluate 10a + 7, if x= 5

Do this on your own. Algebra: Variables and Expressions 1Evaluate 10a + 7, if x= 5

110 5 + 7 =

10 5 + 7 = optional step

2 + 7 = 9

Algebra: Variables and Expressions 1Evaluate 9e, if e= 3

Do this on your own. Algebra: Variables and Expressions 1Evaluate 9e, if e= 3

1 9 (3) =

1 9 9 = optional step

9 9 = 1

Algebra: Variables and ExpressionsThe amount of money that remains from a 20 dollar bill after Malina buys 4 party favors for p dollars each is 20 4p. Find the amount remaining if each favor is $3 each.

Do this on your own.

Algebra: Variables and ExpressionsThe amount of money that remains from a 20 dollar bill after Malina buys 4 party favors for p dollars each is 20 4p. Find the amount remaining if each favor is $3 each.

$20 4p, if p = $3$20 4 $3 $20 - $12 = $8

Algebra: Variables and ExpressionsThe volume of a cube can be represented by s, where s is the length of a side. If the side of a cube is meter, what is the volume?

Do this on your own.

Algebra: Variables and ExpressionsThe volume of a square cube can be represented by s, where is the length of a side. If the side of the cube is meter, what is the volume?

1( 2 ) =

1 1 1 12 2 2 = 8

Algebra: Variables and ExpressionsHow are numerical expressions and algebraic expressions different?

Algebra: Variables and ExpressionsAgenda Notes

Homework Homework Practice 6-3Due Thursday, Nov 21

Mid-Chapter 6 Quiz Friday, Nov 22


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PENNCREST HIGH SCHOOL SUMMER REVIEW PACKET · PDF file-2(4 - x) - 3 = 5 8. 16 = 2(1 - x) 9. x - 4(2 + 5x) = -2 10. 3x + 24 = -3 11. 9(-2 - x)=-10 - 2x . Solve the ... x− = x+ 13

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