numbers

ex 1, 10, 100

numbers following commas

ex 100,000

• whole numbers include 0 to infinity
• natural numbers does not include 0

one hundred + ect...

standard notation

100

consider the next digit to the right

• if the digit is fiver or higher, round up

• if the digit is four or lower, round down

change all digits to the right of the round to zeros

1/2 x b x h

• multiply the base x area
• divide by 2

100¹⁰

100 base

¹⁰  exponent

base x itself

• parenthesis
• exponential expressions

from left to right

• multiplication and division
• addition and subtraction

negative integers

• weather
• sea level
• losing weight
• withdrawing money

is the distance from 0 on a number line

ex 10 and -10 = |10|

• if n is positive we move to the right
• if n is negative we move to the left
• if n is zero we stay

rules for adding integers

add 2 negative

rules for adding integers

add a positive n and a negative n

• if the positive n has a greater value, the answer is positive
• if the negative n has the greater value, the answer is negative

multiplying integers

if there are two n and at least one is negative

multiplication of integers

if there are two n and both are negative

division of integers

if the signs are the same

division of integers

if the signs are different

10 + x = 10

x = 10 - 10

x = 0