Evaluating Expressions

Presentation

•

Mathematics

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6th Grade

•

Practice Problem

•

Medium

•

CCSS

6.EE.A.2C, 6.EE.A.2B, 6.EE.B.7

Standards-aligned

Jenifer Spinale

Used 51+ times

FREE Resource

14 Slides • 8 Questions

Evaluating Expressions

Lesson Goals

I can identify a VARIABLE
I can identify an ALGEBRAIC EXPRESSION
I can Evaluate EXPRESSIONS

Variable

A symbol, usually a letter, used to represent an unknown number or quantity.

Algebraic Expression

An expression that may contain numbers, variables, grouping symbols, and/or operations.

Examples: 2x, 5p-1, 9h + 4, 3y², 4(a +7)

Multiple Choice

What does an Algebraic Expression NOT contain?

exponents

grouping symbols

equal sign

variables

Evaluating Expressions

To evaluate an expression means to substitute the given replacement values for each variable, then simplify to find the numerical value of the expression.

a=9, b=5, c=28

8b
8(5)
40

Fill in the Blanks

a=9, b=5, c=28

c - a

Type answer...

a=9, b=5, c=28

Fill in the Blanks

$\frac{c}{4}$ a=9, b=5, c=28

Type answer...

x = 3

2x³
2(3)³
$2\cdot27$
54

v = 9

3v + 17
3(9) + 17
27 + 17
54

Fill in the Blanks

s = 5

s^{2 - 18}

Type answer...

q = 9 , r = 4

5q + r
5(9) + 4
45 + 4
49

Fill in the Blanks

a = 11, b = 2

4a - 7b

Type answer...

f = 1, g = 6

2(f + g²)
2(1 + 6²)
2(1 + 36)
2(37)
74

Fill in the Blanks

$\frac{c}{d\ }-1$ c=21, d=3

Type answer...

Fill in the Blanks

m=20, n=4

$24\ -\ m\div n$

Type answer...

$x\ =\ \frac{3}{4}$

$\frac{5}{12}x$
$\frac{5}{12\ }\cdot\frac{3}{4}$
$\frac{5}{4}\cdot\frac{1}{4}$
$\frac{5}{16}$

Fill in the Blanks

$x\ =\ \frac{1}{2}$

$\frac{5}{12}x$

Type answer...

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