Integer Basics
A whole number that can be positive, negative, or zero.
What is an integer?
The distance from zero on a number line (always positive).
What is absolute value?
A number that can be expressed as a fraction a/b, where a and b are integers and b doesn't equal zero.
What is a rational number?
3 + (-5) = ?
-2
(-3) x 2 = ?
-6
What is the opposite of -7?
7
What is |-9|?
9
All of these numbers are called what?
1/2, 3/4, -2.5, 0.3333...., 17
Rational Numbers
-7 + (-4) = ?
-11
(-6) x (-4) = ?
True or False: Zero is a positive integer.
False
Solve:
|-3| + |5|
3 + 5 = 8
True or False: 0.333... is a repeating decimal.
True
-9 - (-3) = ?
-6
(-12) / 3 = ?
-4
List all integers between -3 and 3.
-2, -1, 0, 1, 2
Which has the greater absolute value: -8 or 7?
-8, because |-8| = 8, and 8 > 7
Convert 3/4 to a decimal.
0.75
6 - (-2) = ?
8
(-18) / (-6) = ?
3
Order: -4, 2, -1, 0 from least to greatest.
-4, -1, 0, 2
Solve:
|-4 + 2|
|-2| = 2
Is the square root of 9 a rational number?
7 ft below sea level
A number is multiplied by -1. What happens to its sign?
It reverses (positive becomes negative, negative becomes positive).