Adding
Subtracting
Multiplying
Dividing
Number Rules/Ordering integers
100

(-10) + 17 =

7

100

-387-258 =

-645

100

(-7) x 4 =

-28

100

(-24) ÷ 8 =

-3

100

Adding positive/negative numbers:


If the signs are different, _______________ and take the sign of the _____________ number

subtract

larger

200

(-32.5) + (-25.37) =

-57.87

200

25 - (-15) =

40

200

Reduce if possible.

2  3/4 x 4/5 

2 1/5

200

(-42) ÷ (-6) =

7

200
Convert the following decimal to a fraction and a percentage. Reduce if possible.


0.4

40/100 =2/5

40%

300

(-102)+ 53.9 = 

-48.1

300
(-12.5) - (-13.7) = 

1.2

300

(-3.5) x (-0.7) =

2.45

300

-(-20/5)

4

300

Multiply/divide positive and negative numbers:

If the signs are the same, the answer is _______________. 

If the signs are different, the answer is _________________. 

Positive

Negative

400

Reduce if possible

(-3/5) + (-2/15) = 

-11/15

400

(-42.87) - 13.19 = 

-56.06

400

-25.4 x 1/2 = 

-12.7

400

Reduce if possible

(-3/4) ÷ (-8/9) = 

27/32

400

Identify the term with the larger value:

-(-16/-4) or -(100/-10)

-(100/-10)

500

Reduce if possible

(-17/20) + 1/4 = 

-12/20 or simplified -6/10

500

Write your answer as a fraction

(-5 1/4) - 7/8 =

-6 1/8

500

Write your answer as a fraction

(-1  3/9) x (-5/6) = 

1 1/9

500

Complex fraction:

  1/3

_____

  2/5 

5/6

500

Convert the following decimal to a fraction and a percentage. Reduce if possible.


-8.2

820%

8 1/5

We can multiply our decimal by 100 to find the percentage (move the decimal two places to the right).