Absolute Value and Opposites
What is the opposite of -99
99
the numbers to the right of 0 are what?
to the left?
positive
negative
what is a great tool to use to compare and put numbers in order?
a number line
the horizontal axis is called ____________
the vertical axis is called _____________
X axis
Y axis
what are the 2 ways to find the distance between 2 points
using hops or using the ordered pairs
What is the definition of opposite?
Opposite means being on the other side of zero from a number
87 feet below sea level is what number?
-87
before we list the order of numbers, what do we need to double check?
If its asking for Least to Greatest OR Greatest to Least
what quadrant is the point (45, 58) in?
why do we use absolute values to find the distance?
because distance has to be positive, and absolute values are always positive
What is the absolute value of -5
5
number lines can only have whole numbers, true or false?
False, they can have fractions and decimals too
put these in order from least to greatest: 0, 7, -9
-9, 0, 7
what is the ordered pair for the origin
(0,0)
find the distance between (9, 4) and (-7, 4) using the ORDERED PAIR METHOD
16 units
What do the absolute value symbols look like?
straight bars on either side of a number
how do we find the value of the spaces between whole numbers on a number line?
Count the spaces (or hops) between the whole numbers, and that becomes the denominator
put these in order from greatest to least: 8, -8, 88
88, 8, -8
How many quadrants are there and where are they located specifically?
there are 4, #1 is upper right, ten 2, 3, 4 going COUNTER CLOCKWISE
How do we calculate perimeter?
Add up all sides of the polygon
What is the difference between Opposites and Absolute Values?
Opposites are the same distance from zero and can be positive or negative.
Absolute Values ARE ALWAYS POSITIVE
Draw a number line and show where -4, 5 and 0 are
check for correct answer
greater than, less than or equal to??
1/2 0.55
less than (turn both into decimals OR turn both into fractions with the same denominator)
the point (6, -4) is located in which quadrant?
IV or 4
If a rectangle has a side that is 11 and another side that is 18, what is the perimeter? (Draw a picture)
58 (11 + 11 + 18 + 18)