Mp3 Benchmark Review U 789

MP3 Benchmark

By Dominique Smith

​Solving Equations
The videos are for notes you do not have to watch the full video

Multiple Choice

Which equation has w = 8 as the solution?

• 8w= 64
• 16w = 240
• 16 - w = 9
• 4 + w = 10

Multiple Choice

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

Multiple Choice

What is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

Multiple Choice

Twice a number is 24.

• 2n = 24
• 2/n = 24
• 2 + n = 24
• 2 - n = 24

Multiple Choice

Solve for x:

• x = 20
• x = 7
• x = 10
• x = 3

Multiple Choice

Solve the equation
3x = 27. 

• x = 24
• x = 81
• x = 9

Multiple Choice

Which equation has x = 5 as the solution?

• x + 15 = 10
• 2x = 5
• 2x = 10

Multiple Choice

What is the solution for x + 9 = 21

• 10
• 12
• 11
• 13

Multiple Choice

Solve for b
2b = -16

• 8
• 4
• -8
• 3

Multiple Choice

Which of the following is not an equation?

• 2 + 2 = 4

• 2x + 4 = 25

• 3(4 + 5)

• 10 - 2x = 4

Open Ended

Write an equation to model the verbal sentence:

Two more than 3 times a number is 5.

​Unit 8 Inequalities

Solving Inequalities

How can you solve an inequality?

How can you solve an inequality?

• An inequality uses <, >, ≤, ≥, and ≠ to compare two expressions.

• Inequalities have an infinite number of solutions.

• EXAMPLE: x > 5

• One solution is to use x = 7 because 7 > 5.

Graph all of the solutions of x > 5.

To graph x > 5, draw an open circle at 5 on a number line.

• It is an open circle because <, > get open circles.

• ≤, ≥ get closed circles.

Find several solutions and color those on a number line.

7 and 9 are solutions because 7 > 5 and 9 > 5.

Start at the open circle and color over the solutions you found. Draw an arrow to show that the solutions go on forever.

Graphing Inequalities

Now it is your turn!

Remember to use a graph check your inequalities.

Multiple Choice

A student must be at least 15 years old to obtain a driver’s permit.

• x > 15

• x < 15 

• x ≤ 15

• x ≥ 15

Multiple Choice

Tucker lost fewer than 9 points. Which inequality represents the situation? 

• p > 9

• p < 9

• p ≥ 9

• p ≤ 9

Multiple Choice

To order from the kids menu a person must be no more than 12 years old.

• x > 12

• x < 12

• x ≥ 12

• x  ≤ 12

Multiple Choice

Which inequality is represented by the words " at least"?

• <

• >

• ≤

• ≥

Multiple Choice

When you graph an inequality, you used a closed dot when you use which symbols?

• ≤, ≥ 

• <, >

• ≤, <

• ≥, >

Open Ended

Name three solutions for y < -3.

Open Ended

Name two negative integers that are solutions for c ≥ -2.

Open Ended

Name three integers that are NOT solutions for 22 > m .

Open Ended

Name three solutions for -1 ≤ z.

Open Ended

Name three solutions for -2 > y.

Multiple Choice

Match the graph with its inequality.

• a > 11

• a < 11

• a ≥ 11

• a ≤ 11

Unit 9 Two-Dimensional Figures

Multiple Choice

Each pair of figures is congruent. Decide whether the congruence statement is true or false.  

• True

• False

Multiple Choice

Triangle RVN is congruent to triangle BST. If V is 50 degrees then T must be 50 degrees also.  

• True

• False

Multiple Choice

Each pair of figures is congruent. Decide whether the congruence statement is true or false.  

• True

• False

Open Ended

Here are three triangles. Triangle PQR is congruent to which triangle? Explain your reasoning.

Multiple Choice

What is the area of triangle GHJ?

• 5

• 6

• 7

• 12

Multiple Choice

What is the area of triangle LMN?

• 3

• 4

• 6

• 8

Multiple Choice

What is the area of parallelogram ABCD?

• 16

• 20

• 24

• 25

Fill in the Blanks

Fill in the Blanks

Multiple Choice

Which of the following is not true?

• The area is 48cm2

• The height is 6cm

• The perimeter is 38cm

• Base x height is 8 x 6

Important Parts of a Circle

• Radius- the distance between the center of the circle and any point on the circle itself

• Diameter- the distance between any two points on a circle which crosses through the center of the circle

• Circumference- the distance around a circle

• Area- the amount of space enclosed by the circle

• Chord- a line that touches at two points on a circle (a diameter chord, that also goes through the center

DEFINITION: a line that goes from the center of the circle to any point on the circle

FORMULA: Radius = Diameter divided by 2

​

Unit 4B - Circles - Math 7

RADIUS

DEFINITION: A straight line that goes from one side of a circle to the opposite side AND through the center of the circle.

FORMULA: Diameter = Radius x 2

Unit 4B - Circles - Math 7

​DIAMETER

DEFINITION: a ratio between the circumference and the diameter of a circle. It is approximately 3.14

FORMULA: Circumference divided by diameter

​

Unit 4B - Circles - Math 7

Multiple Choice

What is a straight line that goes through the center of a circle from one side to the opposite side?

• Diameter

• Circumference

• Radius

• Center

Multiple Choice

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

Multiple Choice

What is the diameter of the circle?

• 5 inches

• 10 inches

• 3.14 inches

• 15.84 inches

Multiple Choice

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

Multiple Select

What two formulas can you use to find the circumference?

• C = π·d

• C = π·r²

• C = 2·π·r

• C = d²

Multiple Choice

Find the circumference of the circle.

• 78.5 cm

• 15.7 cm

• 7.85 cm

• 19.6 cm

Multiple Choice

The formula for the area of a circle is...

• $$A=\pi d^2$$  

• $$A=2\pi r$$  

• $$A=\pi\cdot d$$  

• $$A=\pi r^2$$  

Multiple Choice

Find the area.

• $$6.28km^2$$  

• $$18.84yd^2$$  

• $$3.14yd^2$$  

• $$12.56km^2$$  

Math Response

I can calculate the area of a circle given its radius or diameter.

What is the area of the circle shown?

Type answer here

Correct Answer: 113.04

Deg^°

Rad

Multiple Choice

Which of the following is true about the diameter of a circle?

• It is always half of the radius

• It is always twice the radius

• It is always equal to the circumference

• It is always twice the circumference

Multiple Choice

In a circle, what value is circumference divided by diameter?

• It is always half of the radius

• It is always twice the radius

• It is always equal to the circumference

• It is always equal to π

Multiple Choice

What does the red speedometer line represent?

• pi

• radius

• diameter