Math Flashcards
What is the orders of operations?
Parenthesis Exponents Multiplication Division Addition Subtraction
PEMDAS
When adding and subtracting fractions, you must have a common _______, then you can subtract the ______.
denominator; numerator
When adding mixed numbers, you can add the whole numbers then add the _____.
fractions
When subtracting mixed numbers, you must convert them into an ______ fraction.
improper
When multiplying fractions, you multiply the ______ and the ______.
numerator; denominator
When working with percentages, a percent = a _______ divided by a ______.
If you are looking for just a part, you multiply the ______ x the ______.
If you are looking for the whole, you put the ______ over the ______.
part/whole
whole x %
part/percent
When multiplying variables with exponents, these can be ______.
added
When you have exponents in a division problem, you ______ them.
subtract
When solving inequalities, such as > or
reversed
Area of shapes:
Triangle: Square: Rectangle: Trapezoid: Circle
Perimeter of a circle?
Triangle - 1/2bh Square - s^2 Rectangle - l x w Trapezoid - 1/2h (b1+b2) Circle - pie(r)^2 / Perimeter - 2(3.14)(r)
Surface area is found by the _______ of each face on the shape.
adding
Surface area of a:
Sphere
Cube
Cylinder
Right rectangular prism
sphere - 4/3(3.14)(r)^3
cube - s^3
Cylinder - 3.14(r)^2(h)
Right rectangular prism - Bh
Equation for the pythagorean theorem?
a2 + b2 = c2
Average of all the terms and divide by the number of terms
Mean
Middle number of the given set; the terms must be in order from highest to lowest
Median
