Core Math Review - Basic Concepts
BEDMAS
Data Management
Algebra
Measurement
100
What are the four most common operations in math?
Addition, Subtraction, Multiplication and Division
100
What comes first?
1 + 2 x 3
2 x 3
100
What is the axis that goes up and down on a graph?
Y
100
What do we add into equations in algebra that everybody tends to find annoying?
Letters!
100
What is the formula for perimeter?
S + S + S + S + S...
200
What do the letters in BEDMAS stand for?
Brackets, Exponents, Division, Multiplication, Addition, Subtraction
200
What comes first?
(3 + 4) + 3 x 2
(3 + 4)
200
What is the axis that goes left to right on a (traditional) graph?
x
200
What is a variable?
An unknown, measurable quantity, normally represented by a letter.
OR
A letter that represents a number that we normally solve for in algebra.
200
What is the formula for area of a square or rectangle?
L x W
300
What number is represented by Pi?
3.14
300
What do you do second?
(1 + 2) x 3
3 x 3
300
How many sections does a graph that has both negative and positive values for x and y have?
Four
300
What does it mean to keep an equation balanced?
To make both sides of the equal sign stay equal when solving.
What you do to one side, you must do to the other!
300
What is the area of this shape?
A = L x W
A = 12 x 7
A = 84cm^2
400
When working with Integers, they can be any number, positive or negative.
What is not considered to be an integer?
Fractions/ decimals. Any part numbers.
400
What do you do third?
75 ÷ 5
OR
3 x 5
(It depends on how you were taught - the first is more correct, as division and multiplication are actually treated as equal when deciding which comes first)
400
What is an "outlier" in a set of data?
A value in a set of data that is very different / stands out from the other values.
400
If:
3x + 1 = 13
Then, what must x equal?
3x + 1 =3
3x + 1 - 1 = 13 - 1
3x =12
3x ÷ 3 = 12 ÷ 3
x =4
400
What is the formula to find the area of a triangle?
B x H / 2
OR
.5 x B x H
500
Explain the difference between perimeter, area, and volume.
Perimeter: the length along the outside of a 2d shape/ face.
Area: in squared units, the total space within a 2d shape/ face.
Volume: in cubed units, the total space within a 3d shape.
500
Solve
500
If a scatter plot has a line of best fit that goes up and to the right (as seen below), what does that tell you about the data in the set?
The data being compared has a strong, positive relationship (e.g. hours studied when compared to test scores - scores go up as hours studied goes up)
500
If
2x + 3x = 15 - 3x
Then, what must x equal?
2x + 3x = 16 - 3x
5x = 16 - 3x
5x + 3x = 16 - 3x + 3x
8x = 16
8x ÷ 8 = 16 ÷ 8
x = 2
500
What is the area of this shape?
A = B x H / 2
A = 30 x 21 / 2
A = 315 units squared