Same Sign
Different Sign
Additive Inverse
3 or More
100

Malachi hikes for 2.5 miles & stops for lunch The he hikes for 1.5 more miles. How many miles does he hike all together?

4 miles

100

-8 + 5

-3

100

What is another word for additive inverse?

Opposite

100

-2.75 + (-3.5) + 5 =

-1

200

-3/4 + (-1/2)

-1 & 1/4

200

-2.5 + 6

3.5

200

Anything plus its additive inverse = ___?

0

200

-1.5 + 3.5 + 2=

4

300

3 + 1 & 1/2


4 & 1/2

300

Do you think -5 + 7 and 7 + (-5) have the same sum? Does it matter if the negative number is the first addend or the second addend?

The order of the addends does not matter when adding a positive or negative rational number. -5 + 7 and 5 + -7 both = 2

300

A football team loses 3.5 yards on their first play. Then gains 3.5 yards on their next play. What is the overall increase or decrease in yards?

-3.5 + 3.5 = 0 yards

300

30 + 15 + (-25) =


45+ (-25) = 20

400

Explain how to determine whether to move right or left on the number line when adding rational numbers.


Move to the right if the number you are adding is positive and to the left if the number you are adding is negative.

400

During the day, the temperature increases by 4.5 degrees. At night it decreases by 7.5 degrees. Find the overall change in temperature.

4.5 + (-7.5) = -3

400

Kendrick adds 3/4 cup of chicken stock to a pot. he then drains 3/4 cup of that chicken stock from the pot. What is the overall in crease or decrease in the amount of chicken stock in the pot.

3/4 - 3/4 = 0 cups of chicken stock

400

Tina spent $5.25 on craft supplies to make friendship bracelets. She made 3.75 on Monday. On Tuesday she sold an additional $4.50 worth of bracelets. What was Tina's overall profit or loss?


-5.25 + 3.75 + 4.50 -5.25 + 8.25 =3

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