Absolute Value
What does absolute value mean?
Absolute value is how far away (distance) a number is from 0 on a number line.
-5 ___ -12
Write the entire inequality on your whiteboard
-5 > -12
0.78 ___ 0.720
Write the entire inequality on your whiteboard
0.78 > 0.720
Define "whole numbers".
Whole numbers include all counting numbers and zero.
Write an integer to represent earning 9 dollars.
True or false: On a number line, the further left you go on a number line, the smaller the number.
True (LEFT = LESS)
-0.78 ___ - 7/10
Write the entire inequality on your whiteboard
-0.78 < - 7/10
The set of numbers that can be written as a fraction are called...
Rational Numbers
Write an integer that represents 36 meters below sea level.
-36
What integer represents this situation: A debt of 56 dollars
-56
Which number has the least value?
a) 3/10 b) 0.45
c) 0.23 d)0.13
d) 0.13
What is another term used to name "Counting Numbers" (whole numbers, starting at 1 and continuing on to infinity)
Natural Numbers
Write an integer to represent a drop of 15 degrees in the temperature.
-15
Order the following numbers from least to greatest
1/10, 0.025, 0.25, -1/7
-1/7, 0.025, 1/10, 0.25
Define "Integers"
All whole numbers and their opposites
Positive and negative whole numbers
A bird was 12 feet above sea level. A fish was 10.5 feet below sea level. What is the distance between the bird and the fish? Sketch a number line and show the distance.
22.5 feet (and accurate number line drawn)
Write the opposite of the opposite of -51
-51
Order the decimals and fractions from
GREATEST to LEAST
-1/4 0.45 -3.2
0.98 1.5 2.5
2.5, 1.5, 0.98, 0.45, -1/4, -3.2
Write the term that describes the set of numbers that includes irrational, rational, integers, whole, counting numbers.
Real Numbers
Sam thinks that -3/4 is greater than 1/2 because it is farther from zero on the number line. Is he correct? Explain.
No. -3/4 has a greater absolute value, but 1/2 is a greater number because it is further to the right on a number line.