Integers   »      

The add & mult house has a cellar,
a first floor and a roof.
Two numbers are on the first floor.

In the roof is the difference of these
two numbers, in the cellar their product.

Determine the missing numbers.

Pay attention to the signs and arithmetic operations.

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Can you top 345 points?


Subt & mult house in ℤhelp
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  •   Subtraction - Help
    Integers can be subtracted by
    adding the opposite number.
    Examples:
    ((-3))-((+5)) = ((-3))+((-5)) = -8
    ((-3))-((-5)) = ((-3))+((+5)) = +2
  •   Multiplication - Help
    - same signs
    ((-3)) × ((-5)) = +15
    ((+3)) × ((+5)) = +15
    Multiply the absolute values of the numbers.
    The sign of the result is +.
    - different signs
    ((-8)) × ((+5)) = -40
    ((+6)) × ((-5)) = -30
    Multiply the absolute values of the numbers.
    The sign of the result is -.