Math review Flashcards
Roman numeral: M
1,000
Roman numeral: D
500
- never written more than once
- never used to the left of a larger value
Roman numeral: C
100
Roman numeral: L
50
- never written more than once
- never used to the left of a larger value
Roman numeral: X
10
Roman numeral: V
5
- never written more than once
- never used to the left of a larger value
Roman numeral: I
1 (one)
PEMDAS
order of math operations
- parentheses
- exponents
- multiplication
- division
- addition
- subtraction
order of math operations
PEMDAS
calculating average speed
average speed = distance / time
how do you calculate a % decrease?
original value - new value
___________________ X 100
original value
calculate a % increase?
new value - original value
____________________ X 100
original value
estimation
round numbers so there is only one nonzero digit in each number
independent variable
the variable that is put into the set of data
dependent variable
output based on the input
line graph
- shows changes over a period of time OR
- compares the relationship between 2 quantities
circle (or pie) graph
circular graph divided into sectors representing frequency of an event
- shows how much of the whole each part represents
histogram
- graph used to compare the frequencies of an event
- frequencies displayed as vertical touching bars (must touch)
bar graph
- used to compare the frequencies of an event
- displayed as non touching, horizontal or vertical bars
