How do you subtract 8.47−5.079?

1 Answer
Gió
Mar 18, 2017

I got 3.391

Explanation:

Ok, you could use a calculator but this is not fun.
We can use our good rules to subtract numbers in columns paying attention that the points must stay one on top of the other!
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Starting from the last zero I get a 1 from the 7 (that becomes 6) and I get 10−1=9;
Next I get another 1 from the 4 (that becomes 3) and I do 16−7=9. The next will be the 3−0=3 and finally 8−5=3.

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