The Basics
Relative to zero, positive numbers are found to the __________ on the number line and negative numbers are found to the __________ on the number line.
Right..................Left
(-4) + (+2) =
-2
9 - (-5)=
14
When adding a negative number, what direction should you move on the numer line?
LEFT
How would you express "remove 17" as an integer?
-17
Which number is greater?
-67 or -76
-67
-6 + (-12) =
-18
-8 - 9 =
-17
How many holes and piles would you need to draw to represent:
-9 + 12
9 holes and 12 piles
What pair of integers represents earning $10 and spending $5?
+10 and -5
4 + (-4) = 0 is called a ____________________.
zero sum or zero pair
9 + (-10) + (+10) =
9
-7 - (-3) rewritten as an addition problem is _____________
-7 + (+3)
You start at -70 on the number line and add +54. Would you end up on a negative or a positive number?
negative
A scuba diver dives 24 m below sea level.
The next day she hiked a mountain and gained 300 m elevation.
What integers would represent this?
-24 and +300
Order the integers from least to greatest.
-2, 2, -5, 0, -7
-7, -5, -2, 0, 2
(-4) + 9 =
+5
(-1) - (7) - (-1) =
What number would you end up at if you start at +9 on the number line and add (-12)?
-3
A hot air balloon rises 450 m above the ground and then descends 225 m. At what heigh is the air balloon?
225 m
When adding two negative numbers, the answer will be ___________________.
Negative
(-8) + 7 + (-9) + 34 =
24
9 - (-2) - 4 - (+1) =
You have 17 red (negative) tiles.
How many green (positive) tiles would you need to model the number -12?
5 green (positive) tiles
The temperature was 0 degrees and throughout the day it increased 9 degrees. By nightfall, the temperature had dropped 12 degrees. What was the temperature at nightfall?
-3 degrees