Ratios & Proportions
Integers
Percents
Probability
Equations/Expressions
100
There are 12 girls and 8 boys in class. Write a ratio of boys to girls in fraction form.
What is 8 boys / 12 girls
100
-4 + -2 = ....
-6
100
Write 48% as a fraction...
48/100
100
What is probability?
The chances of something happening.
100
What's the difference between an equation and an expression?
An equation has an equal sign -- an expression does not.
200
Are the ratios 2/5 and 5/15
No
200
15 - -2
17
200
What is 15% of 25?
3.75
200
When you flip a coin, what's the probability it will land on heads?
1/2 or 50%.
200
Write an expression for: "2 more than one half a number"
2 + 1/2x
300
How do you know when two ratios are proportional?
Ratios are proportional if they reduce to the same number.
300
-10 x -15
150
300
34 is what percent of 80?
42.5%
300
When you roll a dice, what's the probability that it will land on an even number?
1/2 or 50%.
300
Write an expression for "5 less than 3 times a number"
3n - 5
400
Solve for x to make the ratios proportional. 4/3 = x/9
x = 12
400
Yesterday, it was 58 degrees. Overnight, it dropped to -2 degrees. Find the difference between the temperatures.
The difference is 60.
400
A zoo has 15 Emperor penguins. The Emperor penguins make up 30%, percent of all the penguins at the zoo. How many penguins live at the zoo?
There are 50 penguins at the zoo.
400
Ms. Price has 3 pens -- one blue, one green, one red. She's going to pick 2 pens and give them away. The first pen she picks is blue. What's the probability that she picks blue the second time?
0
400
Solve for x : 2x + 15 = 17
x = 1
500
For every 2 cupcakes Bryan eats, John eats 5 cookies. If Bryan eats 6 cupcakes, how many cookies does John eat?
John eats 15 cookies.
500
A submarine is 149 feet below sea level. How many feet must it ascend in order to reach sea level?
It must ascend 149 feet.
500
John makes a 7% commission on all sales he makes and a monthly salary of $750. He makes $4,500 worth of sales in one month. How much does he make that month?
He makes $1065.
500
Make a tree diagram to represent the sample space of the scenario: Ms. Berrios has 4 shirts: blue, yellow, red, and black. She has 3 skirts: denim, black, and khaki. How many different outfits can she make? What's the probability she picks a black skirt with a red shirt?
Sample Space: 12 Probability: 1/12
500
Solve for y: 4y + 7 = 2y - 15
y = -11
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