Rules

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

(-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

(-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

(-224) - (-25) =

What is (- 199)

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

(-501) + (+500)

What is (-1)

500

(-5012) - (-28)

What is (-4984)

500

(-125) x (+5) =

What is (- 625)

500

(-625) / (+25) =

What is (-25)