I
What is an integer?
Whole numbers, their opposites, and 0
What is a rational number?
Number that can be written as a fraction (a/b) where a and b are integers and b is not 0.
What is absolute value?
Whole numbers and their opposites
Subtracting a number is the same as ___________ its _____________.
adding its opposite
|1234|
1234
|-8.7|
8.7
Complete the statements using <, >, or =.
a) 4 |-8|
b) |-7| -12
a) <
b) >
-6 + (-11)
-17
2-(-9)
11
2.86 - 12.1
-9.24
9.2 + (-2.8)
6.4
-4/9 + (-23/18)
-31/18 = -1 13/18
The elevation of a fish is -27 feet. The fish descends 32 feet, and then rises 14 feet. What is its new elevation?
-45 feet
17/12 - (-1/8)
37/24 = 1 13/24
The following list shows your scores, relative to par, for nine holes in golf. What is your total score for the nine holes?
+1, -2, -1, 0, -1, +3, -1, -3, +1
-3
This list shows the rainfall (in inches) for three months compared to the yearly average. Is the total rainfall for the three-month period greater or less than the yearly average? How do you know?
October: -0.86
November: 2.56
December: -1.24
Sum = 0.46 inch
It's greater than the average because the sum is positive.