MATH Flashcards
Integers
Whole positive and negative numbers
No fractions
Prime number
2 factors only
Itself and 1
Composite number
Any whole number thats not prime
Writing decimals in words
0.901 nine hundred one thousandths
Prime factor
Factor that is also a prime number
GCF
largest number that is a factor of both numbers
find which numbers appear in both prime factorizations
multiply them together
LCM
the smallest positive integer that is divisible by both a and b
P=
P=W x %
%=
%= P/W
W=
W=P/%
Percent of change
Change/original amount x 100%
Percent increase
Difference/original x 100%
Any number to the power of 1
Is equal to itself
Any number raised to the power of 0 is
Equal to 1
To multiply powers of the same base number
Add exponents
To divide powers of same base number
Subtract exponents
To raise a power to a power
Multiple exponents
Scientific notation
Number positive if moved left, negative if moved right
Military time
0000 12 am
MT
2359 hours 11:59pm
MT
Convert
For a.m times, if time has 3 digits, add 0 to beginning (ex. 8.12 am 0812)
For times between 12 and 1, replace 12 with 00 (ex. 12:41 is 0041)
For p.. times, add 12 to hour number (3.40p.m = 1540) except times btwn 12 and 1 which do not need further change
MT
Convert
To convert from 24 hour to 12 hour time, at a colon between the second and third digits if the first two digits are less than 12, a.m., otherwise PM if the first two digits are zero the hour becomes 12 AM (ex 0020 becomes 12:20 am)
If only the first digit is zero, remove it (ex. 0730 7:30am)
if the first two digits are greater than 12 subtract 12 (ex 2325 11:25 pm)
Roman numerals
I
1
Roman numerals
V
5
Roman numerals
X
10
Roman numerals
L
50
Roman numerals
C
100
Roman numerals
D
500
Roman numerals
M
1000
Roman numerals
Line over Roman numeral
Means value is 1000x its normal value
Delete
