Review of Adding Integers

Vocab

100

the distance of a number from zero

absolute value

200

The set of whole numbers and their opposites.

Integers

300

numbers that are the same distance from zero as the original number just on the other side (so if positive the _______ is negative, if negative the ___________ is positive).

Opposite

400

|-6|

absolute value of -6=6

500

Subtracting Integers - what is the rule?  

Explain how to rewrite -15 - 3 by adding the opposite

Answer:

Keep, change, change

Keep -15, change the subtraction sign to +, change the + sign in front of the 3 to a - sign.

-15 + (-3) = -18

Adding Integers

100

5 + 8

13

200

-12 + 5

-7

300

(-16) + (-17)

-33

400

How do you find the sum of numbers with different signs?

Subtract and take the sign of the bigger number

500

-16 + 18 + (-17)

-15

Adding Integers 2

100

-76 + (-3) + 5

-74

200

-14 + 4 + 78

68

300

89 + (10) + (-80)

19

400

-5 + 8 + 5 + (-7) + (-8)

-7

500

-23 + 5 + (-33) + 23 + 33 + (-100)

-95

Subtracting Integers

100

13 - 9

4

200

-9 - 3 

-12

300

 -4 - (6)

-10

400

8 - (-9)

17

500

- 8 - (-6)

2

Mixed Review

100

-5 + 3 + (-2)

-4

200

123.45 + 66

189.45

300

4^5

1,024

400

Put the Integers in ascending order... -4, |-18|, -|-6|, 34

-4, -6, 18, 34

500

4.67 x 3.2

14.944