
Substitute the Variable
Presentation
•
Mathematics
•
9th Grade
•
Hard
Joseph Anderson
FREE Resource
5 Slides • 2 Questions
1
Evaluating Expressions
Evaluar expresiones
coeficiente
término constante
2
Learning Intentions: By then end of the lesson, students will be able to
evaluate an algebraic expression.
Success Criteria: I can
substitute the value of a given variable in an expression.
apply the order of operations and integer rules to evaluate an algebraic expression.
different ways of interpreting algebraic expressions
3
paréntesis exponentes multiplicar dividir agregar sustraer
de izquierda a derecha lo que
ocurra primero
de izquierda a derecha lo que
ocurra primero
Orden de Operación
La secuencia a seguir al realizar operaciones en una expresión matemática
4
Step 1 in Evaluating an Algebraic Expression!
Substitute, or replace, the variables with its assigned value.
¡Paso 1 para evaluar una expresión algebraica! Sustituir, o reemplazar, las variables con su valor asignado.
Let's work together!
¡Trabajemos juntos!
Evaluate the following if w = 5 and v = 3.
Evalúe lo siguiente si w = 5 and v = 3.
8w − 2v
5
Step 2 in Evaluating an Algebraic Expression
Perform the operation in the expression using the correct Order of Operations (PEMDAS)!
Paso 2 para evaluar una expresión algebraica Realice la operación en la expresión usando el Orden de Operaciones correcto (PEMDAS)!
8(5)-2(3)
45-6
39
2
6
Multiple Choice
Find the value of the following if a = 2.
Encuentre el valor de lo siguiente si a = 2.
10a−3
23
-23
-17
17
7
Multiple Choice
Find the value of the following if a = 2, b = 10, c = 4
Encuentre el valor de lo siguiente si a = 2, b = 10, c = 4
4a−3b+2c
38
30
22
Evaluating Expressions
Evaluar expresiones
coeficiente
término constante
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