Math

Question 1

angles

Answer 1

360˚ in a circle
a straight line measures 180˚
an obtuse angle must be greater than 90˚
a right angle is 90˚
an acute angle must be less than 90˚
angles that have the same measure are congruent

Question 2

average / mean

Answer 2

a series of #s that are added together and then divided by the number of #s in the series
3, 6, 12, 26, 13 = 12 (60 / 5)

Question 3

circles

Answer 3

Radius is the length from the center of the circle to the edge of the circle
Diameter is 2 x the Radius (2r)
Circumference is 2πr (π = 3.14)
Area is πr2

Question 4

cubes

Answer 4

volume = side3 (s3)

Question 5

distance

Answer 5

12 inches = 1 foot
3 feet = 1 yard
1,760 yards or 5,280 feet = 1 mile
10 millimeters = 1 centimeter
10 centimeters = 1 decimeter
100 centimeters = 1 meter
1,000 meters = 1 kilometer

Question 6

median

Answer 6

the middle # (or #s) in a series of numbers
3, 7, 14, 17, 36
6, 9, 11, 17, 21, 33, 45, 71

Question 7

multiplying binomials

Answer 7

FOIL
First terms
Outer terms
Inner terms
Last terms
(z – 5) (z + 6)

Question 8

order of multiple operations

Answer 8

PEMDAS
Parentheses
Exponents
Multiplication
Division
Addition and Subtraction
Y3 + 2y3 + (14-2)4x2 = 10 xy ÷ 5 =

Question 9

parallelograms

Answer 9

4 sides, 2 acute angles, 2 obtuse angles, opposite sides are equal and parallelPerimeter is 2L + 2W
Area is Base x Height

Question 10

percent

Answer 10

a number expressed based on how much of 100 it is35% (35 out of every 100)
13/25 = 52%

Question 11

Pythagorean theorem

Answer 11

the length of the side of a right triangle that is opposite its 90˚ angle (line c) is line a2 + line b2 = line c2
a2 + b2 = c2

Question 12

ratio

Answer 12

an amount/number expressed as a relationship between two other numbers
1:5 (one out of five)

Question 13

rectangles

Answer 13

4 sides, 4 right angles, opposite sides are equal
Perimeter is 2L + 2W
Area is L x W

Question 14

reduced fraction

Answer 14

a fraction that cannot be further divided to yield a ‘lower’ expression
ex. 3/15 —- 1/5

Question 15

squares

Answer 15

4 equal sides, 4 right angles
Perimeter is 4S
Area is S2

Question 16

three dimensional measurements

Answer 16

volume of a rectangular solid = length x width x height
volume of a cube = length3
volume of a cylinder = πr2 x height

Question 17

triangles

Answer 17

Area is ½ Base x Height

Perimeter is S1 + S2 + S3

Question 18

volume

Answer 18

3 teaspoons = 1 tablespoon
16 tablespoons = 1 cup
2 cups = 1 pint
2 pints = 1 quart
4 quarts = 1 gallon
1,000 liters = 1 kiloliter

Question 19

weight

Answer 19

16 ounces = 1 pound
2,000 pounds = 1 ton
1,000 grams = 1 kilogram