1
When you add two positives you (sometimes/always/never) get a positive sum.
always
(-4) + (+15) =
+11
(-2) x (-25) =
50
(-21) / (-7) =
3
(-1) - (-5)
4
When you multiply two integers with the same sign you (sometimes/always/never) get a negative product.
never
(-50) + (-75) =
-125
(+7) x (+9) x (-2)=
-126
(-45) - (-15) - (-7)=
-23
When you add two negatives you (sometimes/always/never) get a positive sum.
never
(-12) + (-19) =
-31
(-25) x (+3) =
-75
(-144) / (-12) =
12
(-20) - (+10)
-30
When you divide by two integers with different signs you (sometimes/always/never) get a negative product.
always
(-100) + (+25) + (-14) =
-89
(+9) x (-8) x (-3)=
216
(-56) : (+8) x (-2)=
14
(-224) - (-25) - (+18) =
-217
Pythagoras was born about 582 BC. Isaac Newton was born in 1643 AD. How many years apart were they born?
2225
(-501) + (+500) + (-126)
- 127
(-125) x (+5) x (-3)=
1875
(-625) : (+25) x (+9) =
-225
(-5012) - (-28) - (-124)
-4860