When adding integers with the same sign, you can....
Add, and keep the sign.
100
- 9 + -8
-17
100
5 ( 8)
40
100
A ball went up 10 feet then came back down 4 feet before being caught. How far above the floor is the ball?
6 feet
200
What is the absolute value of -100?
100
200
When adding integers with different signs like 5 + (-10) you can do 10 - 5 to get 5 but what will the sign of your answer be? What if it was -5 + 10?
answer both then talk to your partner about how you knew what the signs should be
5+ (-10)= -5
-5 + 10= 5
you take the sign of the "bigger" number.
why is bigger in quotation marks?
200
draw a picture to represent -5 + 7. Circle the zero pair. What is the sum?
should have circled 5 negatives and 5 positives
sum is 2
200
-6 (-9)
54
200
What is the mean of -5, -6, -4 and -5?
What is the range? range means distance between lowest and highest integer. (you can find this by putting them on a number line and seeing how far they are apart)
mean= -5
range= 2
300
Compare using < , > , or =
|-4| _____ |4|
|-4| = |4|
300
When multiplying or dividing numbers with the same sign, you will get a _________ answer.
positive
300
-9 - 4
-13
300
If a= -2, what is a raised to the power of 3?
what is a raised to the power of 4?
(-2) to the power of 3= -8
(-2) to the power of 4= 16
300
Here are Dylan's results from his first five holes from his last disc golf game
holes 1: -1, hole 2: 0, hole 3: +2, hole 4: -2 (that's a hole in one by the way) and hole 5: +1
What is the sum of his scores?
0
400
Compare using < , > , or =.
|-8| ____ |4|
|-8| > |4|
400
When you divide or multiply numbers with different signs, you will get a ___________ answer.
negative
400
Use a number line to model 18 - 20
start at 18 move left 20 places and end up at -2
400
45/ -9
-5
400
A diver dove into the ocean 30 feet. He swam back up 15 feet. Where is he relative to the water's surface?
-15 feet
500
if c = 5 and b= -2 evaluate the following expression:
|c(b)| SHOW ALL STEPS!
10
500
When subtracting integers, you can use the additive inverse to make an equivalent expression. What is an equivalent expression to -5-6? and 6- (-4) that uses addition instead of subtraction?
Leave, Change, Change
-5 + -6
6 + 4
500
- 7 - (-3)
-4
500
-28 / -7
4
500
You lose 5 points every time you forget to write your name on a test. You have forgotten to write your name 3 times. How many points do you lose?
a) What integer represents your change in points from forgetting to write your name?
b) Then, write a sentence that answers the question. (2 pts)
a) -15 points
b) You have lost 15 points for forgetting your name 3 times.