Evaluate
the following giving your answer in standard form.
982.7
x 10-9
5 x 10-20
Solution
= 982.7 x 10-9
5 x 10-20
= 982.7
x 10-9
5
10-20
= 196.5 x 10-9 –(-20)
= 196.5 x 10-9 + 20
= 196.5 x 1011 then we change 116.54 into standard
form as well
=
1.965 x 102 x 1011 [when we have exponents with same base, we
add
the powers.]
=
1.965 x 1013
=
1.97 x 1013 [correct to 2 d.p.]
Hence 982.7 x 10-9 = 1.97 x 1013
5 x 10-20
TRY
THIS………………..
Evaluate
the following giving your answer in standard form.
0.01547
x 10-5
4 x 10-30
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