8th Math review

Presentation

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Mathematics

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8th Grade

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Practice Problem

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Medium

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CCSS

8.G.A.5, 8.NS.A.1, 6.EE.B.8

+10

Standards-aligned

Alexandra Cape

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13 Slides • 20 Questions

8th Math review

The Number System

SUMMARY

Fraction, Decimal, Percent Conversions
Square and Cube Roots
Classifying Numbers

Multiple Choice

What is $1\ \frac{3}{8}$ written as a decimal.

1.38

1.275

1.375

1.265

Open Ended

Give an example of an irrational number that is NOT pi.

Type response here

Multiple Select

Which of the number sets does the number -8 belong?

Natural Number

Rational

Irrational

Integer

Whole Number

Multiple Choice

Write 0.4444... as a fraction in simplest form.

$\frac{4}{9}$

$\frac{2}{5}$

$\frac{11}{50}$

you can't!

Solving Equations

SUMMARY

Distributive Property
Variables on Both Sides
Special Solutions

Multiple Choice

Apply the distributive property. $\frac{1}{2}\left(-10x+16\right)$

$5x-8$

$-20x+32$

$-5x+16$

$-5x+8$

Multiple Choice

Will the equation have one solution, no solution, or infinitely many solutions? $-2\left(x+6\right)=-2x+12$

one solution

no solution

infinitely many solutions AKA all real numbers

Multiple Choice

The area of the rectangle below is 36 square units. Write and solve an equation to find the value of x.

4.4

3.45

Solving Inequalities

SUMMARY

The only rule to remember: FLIP the inequality symbol when x or / by a negative number
< and > open circle
$\le\ and\ \ge$ filled in circle

Multiple Choice

Write an inequality based on the graph.

x $<$ 3

x $>$ 3

x $\le$ 3

x $\ge$ 3

Multiple Choice

Solve the inequality. $1\ge-\frac{1}{2}x+5$

$x\ge8$

$x\le-8$

$x\le-12$

$x\ge-12$

Multiple Choice

Write an inequality for the situation: Miss Cape has at least $3.20 in her pocket.

x $<$ 3.20

x $>$ 3.20

x $\le$ 3.20

x $\ge$ 320

Slope and Rate of Change

SUMMARY

Graph: $\frac{rise}{run}$
Table: $\frac{\Delta y}{\Delta x}$
Two Points: $\frac{y_2-y_1}{x_2-x_1}$

Multiple Choice

Find the rate of change of the graph.

$\frac{1\ inch}{2\ years}$

$\frac{2\ years}{1\ inch}$

$\frac{2\ inches}{1\ year}$

$\frac{3\ inches}{2\ years}$

Multiple Choice

Find the slope of the line that runs through the two points (-4, 6) and (2, -3).

$-\frac{3}{2}$

$\frac{1}{2}$

$-\frac{1}{2}$

$-\frac{4}{7}$

Multiple Choice

Find the rate of change of the table.

$1 for 3 miles

$2.50 per mile

$3 per mile

$5 per mile

Scatter Plots

SUMMARY

Association or Correlation
Linear or Non-linear
Strong or Weak
Making Predictions

Multiple Choice

What type of association would you expect between the the older a child is and the length of their naps?

positive association

negative association

no association

Multiple Choice

Use the trend line to predict what the value of y when x is 9.

Multiple Choice

Use the trend line to predict the value of x when y=80.

3.5

4.5

Angles, Triangles, and Lines

SUMMARY

Angles inside triangles
Angles outside triangles
Angle relationships made by parallel lines and a transversal

Multiple Choice

Identify the relationship between the two angles in the diagram.

Alternate Exterior

Alternate Interior

Vertical

Corresponding

Multiple Choice

Which equation could be used to find the value of x.

$35x-6=180$

$13x-15=22x+9$

$9x-6=180$

$13x-15=90$

Multiple Choice

Which of the following is NOT true about the triangle?

$\angle J+\angle K+\angle L=180$

$m\angle J=65\degree$

$m\angle K=89\degree$

$m\angle L=43\degree$

Multiple Choice

Find the measure of angle A.

$92\degree$

$88\degree$

$82\degree$

$90\degree$

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