How to solve #2.9 xx 10^(11) - 3.7 xx 10^(13)# ?
In order to subtract, you want the exponents to be the same. This allows the decimals to line up for subtracting.
Now subtract the two numbers before the exponents:
Since both numbers have the same exponents, the solution will have the same exponent:
If the subtraction of a greater value is giving you a problem do this:
make the -370 look as though it is +370 when really it isn't
Note that by example:
Applying the above approach we have:
Consider just the
Still will not work so write:
So the answer to this part is
Putting it all back together