Ratios and Proportions
1. Wendy is going to toss two number cubes with faces numbered 1 through 6 and flip a coin. How many possible outcomes are there for Wendy's experiment?
72
Which expression is equivalent to 3x-(2x+4)+5?
x + 1
A fair cube used in a game has 1 yellow side and 5 green sides. Emily will win the game if the cube lands on a green side on her next roll. Which statement best describes Emily's chance of winning the game?
Most likely will win
TJ's Cat Food is sold in boxes shaped like this. Each tin has an internal height of 5 cm.
The area of the lid of the tin is 35 cm sq. Find the volume of cat food that the tin contains.
175 cm cubed
-100 – (-10) = _____ + 10
100
Tony bought a $48 sweatshirt and used a coupon for a 10% discount. Keith bought an identical sweatshirt at a different store for $42.95. Which statement is true?
Keith paid $0.25 less than Tony paid.
Which expression is equivalent to 1/2(2n+6)?
n + 3
Seventeen out of 20 teens said they eat breakfast every morning. What is a reasonable prediction for the number of teens out of 1,280 who eat breakfast every morning?
1,088
Aiden is buying a house and looking at blueprints to make his decision. If each 5 cm on the scale drawing below is equal to 9 yards, what is the area of the living room?
Room is 15 cm by 20 cm
972 square yards
While reviewing last month's finances, Oscar noticed that he had spent $200 on a wedding cake and deposited $ 500 that he had earned from selling books to a used bookstore. Which integer represents the change in Oscar’s savings?
173
An item on the sale rack at a local supermarket was marked $3.42. The original price of the item was $4.75. What was the percent of the discount?
28%
Which is not equivalent to 2m+10m+14+3?
m+12m+8+9
2m+10+10m+7
6m+6m-1+18
15m+15-3m+2
m+12m+8+9
A bag contains:
• 5 red marbles
• 6 blue marbles
• 3 green marbles
• 4 black marbles
• 2 yellow marbles
A marble will be drawn from the bag and replaced 100 times. What is a reasonable prediction for the number of times a green or black marble will be drawn?
35
What is the volume of the figure below?
The shape is 13m by 9m by 4m
468 meters cubed
8. Mark evaluated an expression using the steps below.
1/2+(-3/2)+1/2
Original
=1/2+(-3/2)+(-1/2)
Step 1
=1/2+(-1/2)+(-3/2)
Step 2
=0+(-3/2)
Step 3
=-3/2
Step 4
In which step did Mark make his mistake?
Step 1
Which expression is equivalent to 5/2 (2x-15)+2?
5x - 35.5
Solve: 2X – (-6) = 4
x = -1
A survey found that 5 out of 6 people in a community visit a dentist on a regular basis. If there are 4,320 people in the community, what is a reasonable prediction for the number of people who would visit a dentist on a regular basis?
3,600
. A circular lampshade with a diameter of 14 inches has a length of wire that goes around it exactly one time. How many inches of wire are needed to go around the lampshade exactly one time?
14 pi
or 43.96
Erica saw a skateboard on sale for $59.95. The original price of the skateboard was $79.95. What is the approximate percent discount on the skateboard?
25%
An appliance store sells an oven for 25% off the original price. The sale price is $251.85, not including tax. What is the price of the oven, not including tax, before the discount is applied?
335.80
Add: 14+(-52)+13
-25
Seventeen out of 20 teens said they eat breakfast every morning. What is a reasonable prediction for the number of teens out of 1,280 who eat breakfast every morning?
1,088
Choose whether the statement given below is true or false.
The equation for the volume of a right rectangular prism box is v = a+b+c. The dimensions of the box are given below. Here, a is the length, b is the breadth, and c is the height of the box.
false
Which of the following is equivalent to the expression -1/7 –5/16?
(-1/7)+(-5/16)