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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 2

100

(-1)(-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

(-10) + (-12) =

What is (-22)

200
(-20) - (+10)
What is (-30)
200

(-25)(+2) =

What is (-50)

200
(-144) / (-12) =
What is (12)
300

When you multiply two integers with the same sign you (sometimes/always/never) get a negative product.

What is never

300

(-5) + (15) =

What is (10)

300

(5) - (-15) =

What is (20)

300

(7)(9) =

What is (63)

300
(-12) / (+2) =
What is (-6)
400

When you divide two integers with different signs you (sometimes/always/never) get a negative product.

What is always

400

(25) + (-20) =

What is (5)

400

(-2) - (-2) =

What is (0)

400

(9)(-8) =

What is (-72)

400
(-56) / (+8) =
What is (-7)
500

When you add two numbers with different signs, you (sometimes/always/never) get a positive number.

What is sometimes

500

(-7) + (-4)

What is (-11)

500

(35) - (-5)

What is (40)

500

(8)(6) =

What is (48)

500

(-72) / (9) =

What is (-8)