Vocabulary
____________ are whole numbers, their opposites, and zero.
Integers
Compare: - 7 ____ 3
<
The Seahawks had a gain of 15 yards. What integer represents this?
15 or +15
Put these numbers in order from least to greatest.
-1, -9, 6, 3, -3
Name a pair of opposites.
Example:
-13 and 13
________________ represents the distance from zero on a number line.
Absolute value
Compare: -9 ____ -10
>
Josiah owes the bank $45. What integer represents this?
-45
Put these numbers in order from least to greatest.
1.3, -2, -5 1/2, 4, 2.71
-5 1/2, -2, 1.3, 2.71, 4
Absolute value is ALWAYS ___________!
positive
The four sections of a coordinate plane are called _________________.
Quadrants
Compare: -1.25 ____ - 1 1/4
=
What integer represents sea level?
0
Put these numbers in order from least to greatest.
-2.5, 2.8, -2.42, 2.75, -2.57
-2.57, -2.5, -2.42, 2.75, 2.8
John recorded the weight change of his dog, Max, at the end of each week.
Week 1: -1 Week 2: -9
Week 3: 4 Week 4: -6
Over which week did the greatest weight change occur?
Week 2
Two numbers are ____________ if they have the same absolute value, but different signs.
Opposites
Compare: 3/8 _____ 0.4
<
Which animal is closest to sea level?
Turtle: 3 feet Fish: -6 feet
Eel: -2 feet Bird: 10 feet
Eel
Put these numbers in order from least to greatest.
1 1/4, -1 3/4, -1 1/2, 1 4/8
-1 3/4, -1 1/2, 1 1/4, 1 4/8
Sarah started with $0 in her bank account. She deposited her paycheck for this week which was $415. Then she paid $320 for the rent on her apartment, $45 for her electric bill, and $57 for her phone bill. What will her account balance be?
-$7
Tell whether this statement is always, sometimes, or never true:
The opposite of an integer is different from the absolute value of an integer.
sometimes
Compare: -2 4/5 ____ -2.85
>
Phil has an account balance of -$72.
Bart has an account balance of -$75.
Melvin has an account balance -$69.
Who owes the most money?
Bart
Put these numbers in order from least to greatest.
-3.25, -2.4, -2 4/5, -3 3/4
-3 3/4, -3.25, -2 4/5, -2.4
Find the distance between these two points.
(-7, -2) and (-15, -2)
8 units