Adding and Subtracting Integers

Vocab

100

Absolute Value

The distance of a number from zero

200

Integer

The set of positive and negative whole numbers and zero.

300

Opposite

Numbers that are in opposite positions on the number line. 

400

What is |-6|?

Absolute value of -6 = 6

500

6 and -6

Opposites

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-17) + 15

-18

400

-11 + 12 ÷ 4 + (-9)

-17 

500

On a winter day, The temperature in a city was -17 degrees. It rose by 2 deg every hour for the next 3 hours, then it dropped by 4 degrees. what was the final temperature?

-15 degrees

Subtracting Integers

100

-4 - 6

-10

200

4 - 11

-7

300

15 - (-7)- 3

19

400

[-27 - (-3)] - (-9)

-15

500

 10² ÷ 20 - (-11 + -15) 

31

Mix

100

|-2| - 3 + 7

6

200

-10 + 30 - 3

17

300

21 - (+5) - (-17)

33

400

-19 + 14 - (-16) + 8

19

500

A diver is 550 feet below the sea. He swims upward until he is now 850 ft above the sea. What is the difference between where he is now and where he was?

1400 ft

Absolute Value

100

|-9| - 5

4

200

0 - | -4 |

- 4

300

- |-6 |

- 6

400

|-45| + (-34)

11

500

5 - |-17| - (-14)

2