Vocabulary
A positive or negative whole number
Integer
Hyun is on a game show. Hyun earns points for correct answers and loses points for incorrect answers. At the end of the second round, he has 5 points. In the third round, he loses 5 points. How many points does Hyun have after the third round? S
0
-4.3 + 1.4
-2.9
Between the time Iko woke up and lunchtime, the temperature rose by 11°. Then by the time he went to bed, the temperature dropped by 14 °. Write an addition expression for the temperature relative to when Iko woke up
11 + (-14)
The result of addition
Sum
Javier says that when you add a positive and a negative number, the sum is always negative. Is Javier’s statement true or false? Explain
False. A sum of positive and negative numbers will be positive if the positive numbers absolute value is greater, negative if the negative number's absolute value is greater
What is -12 3/4 + (-5 1/2)?
An orca is swimming at an elevation of -6 m relative to sea level. Several seconds later the orca’s elevation increases by 7 m. Write an addition expression for the orca’s new elevation relative to sea level
-6 + 7 = 1
A number that is divided by a divisor. The numerator of a fraction
Dividend
-56 + 29
- 27
-4.7 + (-5 13/20)
-10.35 or -10 7/20
Normally, the freezing point for water is 32°F. A city treats its streets before a snowstorm. On the treated streets, the freezing point for water is changed by -38°F. Write an addition expression and determine the new freezing point.
32 + (-38)= -6
The result of division
Quotient
179 + (-256)
- 77
-12.04 +(-3.6)
-15.64
A dragonfish is swimming at -900 m relative to sea level. It rises 250 m. What is the dragonfish’s new depth relative to sea level?
-900 + 250 = -650 m
The distance between a point and zero, non-negative
Absolute Value
(23 x 2) + (-46)
0
-3.18 + 8.02
4.84
A chemist has a mixture with a temperature of 3.5°C. Then the chemist cools the mixture. The temperature changes by -14.2°C. What is the temperature of the mixture after it cools? Write an addition expression and solve.
3.5 + (-14.2) = - 10.7