Rules
Addition
Subtraction
Multiplication
Division
100
When you add two positives you (sometimes/always/never) get a positive sum.
What is always
100
(-4) + (+8) =
(+4)
100
(-1) - (-1)
What is 0
100
(-1) x (-25) =
What is (+25)
100
(-21) / (-7) =
What is (3)
200
When you add two negatives you (sometimes/always/never) get a positive sum.
What is never
200
(-12) + (-12) =
What is (-24)
200
(-20) - (+10)
What is (-30)
200
(-25) x (+2) =
What is (-50)
200

(-60) / (-12) =

What is (5)

300
When you multiply two integers with the same sign you (sometimes/always/never) get a negative product.
What is never
300
(-50) + (-75) =
What is (-125)
300
(-45) - (-15) =
What is (-30)
300
(+7) x (+9) =
What is (+63)
300
(-12) / (+2) =
What is (-6)
400
When you divide by two integers with different signs you (sometimes/always/never) get a negative product.
What is always
400
(-100) + (+25) =
What is (-75)
400

(-32) - (-28)

What is (- 4)

400

(9) x (-8) =

What is (-72)

400
(-56) / (+8) =
What is (-7)
500
You call both positive and negative whole numbers this.
What are integers
500

(-11) + (10)

What is (-1)

500

(-124) - (-25) =

What is (-99)

500

(-15) x (5) =

What is (- 60)

500

(-100) / (25) =

What is (-4)

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