Multiplying two negative numbers together: a real world example?

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Soldato
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I was just thinking about this, I'm pretty good at maths but I'm stumped with this one. If you multiply a negative number by another negative number you get a positive number. I can't think of any real world examples where this can make sense. Now I'm thinking perhaps something at the cellular level and bacteria. I've no idea.
 
But the church doesn't accept window families so how can we be teaching kids this when it's not relevant yet? 1+1 still equals 2 until the church modernises.
 
Lol, same :p I actually got someone to go on youtube and find a retarded video. I bet they watched it too :p
 
If I dont have 5 apples in one hand, and dont have 5 apples in the other hand, and dont have 5 apples in my fruit basket, and dont have 5 apples in my fridge, and dont have 5 apples in the cupboard ....

Then that means that I have 25 apples. Wait, what?

Or even simpler, it doesnt have to be -5 x -5, it could be -5 x -2 ....

If I dont have 5 apples in one hand, and dont have 5 apples in the other hand, then I have 10 apples.

Maths sure is broken.

Nah, you're doing -5 * 5 and -5 * 2. In the last example you don't have hands.

If a doctor owes you a pair of hands and a farmer owes you an apple for each hand the doctor owes you you'd have 2 apples.

-1(hands) * (-2 apples). Although that's clearly a nonsense example.
 
I can think of a real world example :D

Area is height x width.

If you're plotting something on a graph, and want to find the area. Let's say the points are -5 on the x axis, and -4 on the y axis, the area is 20, not -20.

All hail . . . .

Finally we got a real world example.

Nope this is wrong. You're multiplying the length of one side by the width of the other, the length is 0 - (-5) and the width 0 - (-4) so you have 5 * 4. And the subtraction of a negative number is very easy to show in the real world.
 
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