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Adding and subtracting fractions
Adding the same denominator
Add the top numbers
Put it over the denominator
Simplify if possible
Subtracting the same denominator
Subtract the top numbers
Put it over the denominator
Simplify if possible
Adding/ subtractin
Volume
Calculating Volume
Volume is measured in cubes (or cubic units).
We can count the cubes although it is quicker to take the length, width, and
height and use multiplication. The rectangular prism above has a volume of 48
cubic units.
The volume of a
Calculating surface area for different shapes
Surface area: the sum of all the areas of all the shapes that cover
the surface of the object
Surface Area of a Cube = 6 a 2
a is the length of the side of each edge of the cube
surface area of a cube is the a
Multiplying and dividing fractions
Multiplying simple (proper) fractions
1. Multiply the top number
2. Multiply the bottom number
3. Simplify if needed
1
2
2
1
5
2
=
12
2
=
2
5
25
10
1. Equation
2
1
=
10
5
2.Multiply top and bottom number
3.Simplify
Multi
The properties of a fraction
Fractions: a numerical quantity that is not a whole number
Eg: , , 5/2, 4 1/2
1.
Proper fraction
Eg:
The numerator is smaller than the denominator
Numerator is the top number and shows how many parts we have
Denominator is th
Orders of operations
B
E
D
M
A
S
Brackets
Exponents
Division
Multiplication
Addition
Subtraction
B
E
D
M
A
S
Do all operations inside brackets
first.
Evaluate all exponents.
Divide and
Multiply, in order from left to right.
Add and
Subtract, in order from