Number Sense
Equations & Expressions
Ratios & Proportions
Probability & Statistics
Geometry
100
What is the definition of absolute value? Find |-20|
Absolute value is the distance a number is from 0. |-20| = 20
100
Combine like terms: -18y + 22y =
= 4y
100
Determine if the ratios are proportional: 4 : 7 and 16 : 49
No 4*4=16 but 7*4 = 28, not 49
100
A student is randomly selected from a class of 32 students. There are 20 girls in the class. What is the probability that the selected student is a boy?
32 - 20 = 12 12 / 32 = 6 / 16 = 3/ 8
100

What is special about vertical angles?

They are congruent (equal)

200
- (4) - (-13) =
-4 - (-13) = Remember: -(-) = + -4+13 = = 9
200
Use the distributive property to simplify the expression: -8( -x + 5 ) =
= 8x - 40
200
Find the unit rate: 39 meters in 13 seconds
3 meters per second
200

Find the mean of the following values: 17, 7, 11, 13, 2, 12, 7

Mean: 9.9 

200
If two angles sum to 90 degrees, what do we call them?
Complementary Angles
300
1/6 + 3/12 = ? Notice: Unlike denominators!
= 5/12
300

Use inverse operations to solve for "x" 

-11x + 3 = -30

 x = ?

-11x + 3 = -30 Subtract 3 from both sides -11x = -33 Divide both sides by -11 x = 3

300
Which is the better unit price? $4.00 for a 16-ounce bag of Doritos or $3.60 for a 12-ounce bag of Cheetos?
4.00/16 = $.25 per ounce for Doritos 3.60/12 = $.30 per ounce for Cheetos. Doritos are a better deal.
300
A jukebox has 2 rock CDs, 5 country CDs, 7 R&B CDs, and 6 rap CDs. The jukebox randomly selects a CD to play. What are the odds the jukebox will not choose a rock CD?
2 + 5 + 7 + 6 = 20 CDs total Only 2 are rock, so 18/20 are not rock = 9/10 or 90%
300

What is the volume of a cube with side length 4.

64

400
(3/5)(4/9) = ? Remember: Fraction multiplication!
12/45 = 4/15
400
Solve the following inequality for the variable: x/2 - 4 > 8
x/2 - 4 > 8 Add 4 to both sides x/2 > 12 Multiply both sides by 2 x > 24
400

Solve the following proportions: 

16 / x = 2 / 3 

x = ? 

n / 8 = 3 / 4 

n = ?

x = 24 n = 6

400
2 friends are playing with a normal 52-card deck of cards. Monica and Rachel each take a card from the deck. Joey's turn is next. What is the probability that Joey will get a 9?
Since Monica and Rachel took a card, 52 - 2 = 50 Four 9's in the deck 4/50 = 2/25 chance Joey gets a 9
400

A circle has an radius of 3 millimeters. If we use 3.14 for pi, what is the area of the circle? YOU MAY USE A CALCULATOR.

28.26 square millimeters

500
(2/12) รท (8/3) = Remember: Fraction division K, C, F
6/96 = 1/16
500
A 7th grader is taking his crush to the movies. He has $40 to spend. They go to the movies in the afternoon, when the tickets are only $8 each. He really wants to buy some snacks, too, which are on special for $5 each. Set up an inequality to depict this scenario, and then explain how many possible snacks he could buy.
2*8 + 5x < 40 (Note: < means less than or equal to) 1. Subtract 16 from both sides: 5x < 24 2. Divide both sides by 5: x < 4 remainder 4 So, he can buy UP TO 4 snacks.
500

Find the constant of proportionality: (Remember: k = y/x) 

x: 2, 5, 10, 12 

y: 1.5, 3.75, 7.5, 9 

k = ?

9/12 = .75 k = .75

500
Chandler and Ross are playing cards. What is the probability that Chandler will get a 5 (and keep it) AND THEN Ross will get an 8?
4/52 * 4/51 = 16/2652 1/13*4/51 = 4/663
500

What is the surface area of a square pyramid when one of the sides of the square base is 7 and the height of one of the triangles on the side is 6.

133 square units

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