Additive Inverses
Name the inverse of 25
-25
1.875 is what type of decimal?
Terminating decimal
Is -8 + - 13 positive or negative? Explain
Negative, Neg. + Neg. = Neg.
6 - (-2) = ?
8
What is the decimal equivalent of the mixed number
3 & 7/8?
3.875
What is the inverse of -1,276?
1,276
What is the decimal equivalent of 8 out of 11?
0.7272...
-5 3/8 + 3 1/4 = ?
-2 1/8
- 14 - 17 = ?
-31
Simplify the expression:
15.75 - 10 1/2 + 21
26.25 or 26 1/4
My daughter dropped her Barbie doll in the pool that was 8 feet deep and it sunk. If I dive in and grab it, then swim back up and place the Barbie doll on the ledge that is even with the top of the surface level, what integer represents the Barbie doll's final position?
0
Is a fraction like 6/11 an integer or a rational number?
Rational Number
The temperature drops 12 degrees and then rises 15 degrees. Write an addition expression to represent this situation.
-12 + 15
The temperature at the golf course was 50C at 10am. By 4pm, the temperature had dropped 80C. What is the temperature at 4pm?
-30C
Mackenzie throws a rock into Lake Tahoe while standing 16 3/4 feet above the surface level. The rock sinks to the bottom of the lake which has a depth of 22 3/4 feet. What is the total distance the rock traveled?
39 1/2 feet
Jessie takes an elevator up 12 floors in a hotel. Then she realizes she left her suitcase in the lobby and travels back down the 12 floors to get it. Does this situation represent additive inverses? Explain
Yes, the numbers combine to make zero
Is 15/18 a rational number? If yes, what type of decimal does it produce?
Yes, a repeating decimal
Josiah borrows $7 from Cory for lunch. Then he borrows $9 from his brother to pay for gas for his car. Write an equation to show his total debt for the day.
-$7 + -$9 = -$16
Mr. Macauda gives his daughter $5 so she can buy some cookies after dance class. Then he gives her $11 for the arcade at Wild Eagle. Write an equation to represent Mr. Macauda's loss of money.
-5 + -11 = -16; $16
Zuri puts $400 into a bank account that will just be used for her fitness expenses at her new gym. The gym charges her $17.50 each month for membership. How much money is in Zuri's account at the end of 4 months?
$330
On Wednesday, Jackson weighed 198 pounds. Then on Thursday night of Thanksgiving he added 6 pounds of food and water weight. He exercised all Friday, Saturday and Sunday and by the start of Cyber Monday, he lost 6 pounds. How much did he weigh on Monday?
198 pounds
Is 2.343443444... rational?
No, it is a pattern that continues forever, but doesn't repeat
Tim has $50. He mows two lawns to earn $12 for each, then washes a car to get another $9. He goes shopping and buys two video games for $15 each and a sweatshirt for $35. How much money does Tim have left?
$18
Jackie and Thomas do their math homework together and when they do 9 - (-8) they get different answers. Jackie gets 17 while Thomas claims the difference is 1. Who is correct and what is the most likely error?
Jackie is right; most likely Thomas forgot to make the - (-8) into positive positive so he did 9-8
The roots of a plant reach down 3 3/4 inches below the ground. The total length of the plant from underground to its tallest point is 12 1/2 inches. How many inches is the plant above the ground?
8 3/4 inches