Evaluate the following giving
your answer in standard form.
582.7 x 10-9
5 x 10-20
Solution
= 582.7 x 10-9
5
x 10-20
= 582.7
x 10-9
5
10-20
= 116.54 x 10-9 –(-20)
= 116.54 x 10-9 + 20
= 116.54 x 1011 then we change 116.54 into standard
form as well
= 1.1654 x 102 x
1011 [when we have
exponents with same base, we add
the powers.]
= 1.1654 x 1013
= 1.17 x 1013 [correct
to 2 d.p.]
Hence 582.7
x 10-9 = 1.17 x 1013
5 x 10-20
TRY THIS………………..
Evaluate the following giving
your answer in standard form.
0.001247 x 10-9
4 x 10-30
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