Mixed Practice Test 3.3 Review: Why did the Teacher?

Multiple Choice

How could you write this problem as an inequality?

• 5.25g + 4 < 25

• 5.25 + 4g > 25

• 5.25g + 4 > 25

• 5.25 + 4g < 25

Multiple Choice

Why did the teacher subtract 5.25 from 25.00?

• To find out how much change Craig would receive after shopping.

• To determine how much money was spent on food.
• To find the remaining amount after renting shoes.
• To calculate the total cost of shoes and games.

Multiple Choice

Why did the teacher divide 19.75 by 4?

• To find the cost per game.
• To determine the number of players.
• To calculate the total cost of shoes.
• To find determine the greatest number of games that can be played

Multiple Choice

Why is the answer 4 and not 5?

• 4.9375 rounds to 4

• Craig does not have enough money for 5 games.

Multiple Choice

Why did the teacher flip the sign?

• It changes the direction of the inequality and flips the relationship over zero on the number line.

• The teacher likes the greater than sign more than the less than sign.

Multiple Choice

Which phrase in the problem led the teacher to use the greater than sign (>) instead of the less than sign (<)?

• more than $500
• earns $125

• earns an additional $5

• c is the number of pieces of furniture Mrs. Kimbel sells

Multiple Choice

Why didn't the teacher combine 11w and -6 to equal -5w?

• Because 11w and -6 are not like terms.
• Because 11w is a constant term.
• Because -6 is a variable term.
• Because 11w and -6 do not get along

Multiple Choice

Why did the teacher calculate $$-8\times-3=24$$ instead of $$-8\times-3=-24$$ ?

• The teacher made a calculation error in the equation.
• The teacher wanted to confuse the students by including multiple negative signs.

• when multiplying two negative numbers, the negative signs cancel each other out, resulting in a positive product.

Multiple Choice

Which is an example of the distributive property?

• a + b = b + c

• (a + b) + c = a + (b + c)

• a + 0 = a

• a(b + c) = ab + ac

Multiple Choice

What is another way the teacher could have written the expression $$\left(-\ \cdot\ 3x\right)+\left(-\ \cdot\ 8\right)$$ ?

• 3x - 8

• -3x + -8

• 3x + 8

• -24x

Multiple Choice

Why did the teacher multiply 44 by 2?

• Since the diameter is half of the radius

• Since the diameter is the radius squared

• since the diameter is twice as long as the radius

• since the diameter is the radius times pi

Multiple Choice

Which formula did the teacher use?

Multiple Choice

Which represents the formula $$C=\pi d$$ written in words?

• The area of a circle is equal to pi times the radius.
• The diameter of a circle is equal to two times the circumference.
• The circumference of a circle is equal to the radius squared.
• The circumference of a circle is equal to pi times the diameter.

Multiple Choice

In the equation $$r=\frac{\text{188}}{\text{6.28}}$$ where did the teacher get the number $$6.28$$ ?

• 6.28 is an approximation of 2π.
• 6.28 is the circumference of the circle.
• 6.28 is the diameter of the circle.
• 6.28 is the radius of a different circle.

Multiple Choice

I transformed the formula $$C=2\pi r$$ into $$r=\frac{C}{2\pi}$$ by dividing both sides by $$2\pi$$ .

Did you notice that you can rewrite formulas using what you know about solving equations?

• Yes

• No

Multiple Choice

In "Another Way," why did the teacher divide 188 by 2?

• To calculate the diameter of the circle.
• To simplify the calculation of the radius from the circumference.
• To find the area of the circle.
• To convert meters to centimeters.

Multiple Choice

In "Another Way," why did the teacher divide 94 by 3.14?

• To calculate the diameter of the circle.
• To determine the area of the circle.
• To find the radius of the circle.
• To find the circumference of the circle.

Multiple Choice

What is surface area?

• Surface area is the volume of a three-dimensional object.
• Surface area is the total area of all the faces of a three-dimensional object.

• Surface area refers to the weight of an object.
• Surface area is the distance around a two-dimensional shape.

Multiple Choice

Which describes what type of figure is in problem 10?

• rectangular pyramid

• rectangular prism

Multiple Choice

Why did the teacher add 72 and 18?

• Adding the area is the last step when calculating the volume.

• Adding the area of the faces is the last step when calculating the surface area.

Multiple Choice

The formula to find the volume of a prism is $$V=Bh$$ . Which correctly expresses what this formula means in words?

• Volume equals area of the base divided by the height.

• Volume equals the boundary point times the height.

• Volume equals base times height.

• Volume equals area of the base times the height.

Multiple Choice

Why did the teacher multiply 4, 6, and 3?

• When finding the volume, calculate the area of one face, then multiply by 4.

• I do not think the teacher knows why 4, 6, and 3 are multiplied.

• The teacher saw the front face's dimensions are 3ft by 6ft and multiplied by 4 since that is the teacher's lucky number.

• There are 4 sides of the prism that share the dimensions 3ft by 6ft.

Multiple Choice

Why did the teacher multiply 2, 3, and 3?

• The two bases of the prism share the dimensions 3ft by 3ft.

• The three bases of the prism share the dimensions 3ft by 2ft.

• The two bases of the prism share the dimensions 6ft by 2ft.

• The three bases of the prism share the dimensions 6ft by 2ft.

Multiple Choice

Where did the teacher get $$0.5$$ ?

• 1/2 written as a decimal

• r squared written as a decimal

• The teacher was trying to spice things up by multiplying by a decimal.

Multiple Choice

In the formula to find the volume of a prism, $$V\ =Bh$$ which letter is represented by the expression $$0.5\left(6\ \cdot\ 5\right)$$ ?

• V

• B

• h

Multiple Choice

In the formula to find the volume of a prism, $$V\ =Bh$$ which letter does the $$11$$ represent?

• V

• B

• h

Multiple Choice

Why did the teacher multiply 12 and 52?

• To find how many feet wide Lot B is

• To find the combined area of the property

• To find the area of Lot A

• To find the area of Lot B

Multiple Choice

Why did the teacher subtract 624 from 2,444?

• To find the area of Lot B

• To find the area of Lot A

• To find the width of Lot B

• To find the width of Lot A

Multiple Choice

In the expression $$1,820\ \div52$$ , where did the $$52$$ come from?

• Since the width of Lot A is 52, the width of Lot B is 52.

• The number 52 represents the area of Lot A.

• Since the length Lot A is 52, the length of Lot B is 52.

• The number 52 represents the area of Lot B.

Multiple Choice

Why did the teacher divide 1,820 by 52?

• The formula to find the area of a rectangle is A = lw,

  so

  1,820w = 52.

  To solve,

  divide 1820 by 52.

• The formula to find the area of a rectangle is A = lw,

  so

  1,820 = 52w.

  To solve,

  divide 1820 by 52.