Adding Integers
4 + -10
10 - 11
Andrea is going to the store. She has 10 dollars. She wants to buy a 12 dollar pencil case. Does she have enough money?
No. She would need 2 more dollars.
Solve:
3x - 5 = 7
x = 4
Ms. Paola has a bag of ten markers, 3 are red, 2 are blue, 1 is black, 4 are yellow.
What is the probability that she will pick a red marker?
3/10
Is the following negative or positive?
10 + -10
Neither, it is zero
-5 - 7
-12
Cassidy has 6 dollars in her bank account. They buy a water bottle for 9 dollars. How much money does their bank account have now?
-3
Solve:
6x + 7 = 25
You have a dice labeled 1-6. What is the probability of landing on the number 2 or 3?
2/6 or 1/3
Is the following positive or negative?
3.5 + -3
Is the following positive or negative?
-3 - 5
Negative
Mario is in debt 6 dollars. Over the weekend he makes 20 dollars mowing a lawn. How much money does he have now?
14 dollars
Solve:
-4x - 3 = 13
x = -4
You have a bag of marbles. There are five black and five white. Does the bag of marble show uniform or non-uniform probability?
Uniform
5 + -9 + -3
-7
3 - 7- 5
-9
Mario is going to the store. He buys a 12 dollar pencil bag, and 5 pencils. If he spends 22 dollars, write an equation to describe how much he spent on each pencil, p.
12 + 5p = 22
Solve:
5x + 15 = 5
x = -2
You have a dice labeled 1-6. If you roll the dice 30 times how many times will it fall on 3.
5 times
-3 + 14 + -4 + 5
12
- 6 - 2 - 11
-19
Mr. Burroughs is buying food for his 703 class and only 703. He buys 30 dollars worth of coca cola and 1 taco for each 20 kids. He spends 110 dollars. Write AND solve an equation for how much each taco cost, t.
30 + 20t = 110
t=4
5x - 2x + 5 = 26
x = 7
15