243.92 = 2.4392 × 1002
1.82371 | × | 101 | = | 1.82371 | × | 10 | = | 18.2371 | (move the point 1 place right) |
1.82371 | × | 10-1 | = | 1.82371 | × | .1 | = | .182371 | (move the point 1 place left) |
1.82371 | × | 102 | = | 1.82371 | × | 100 | = | 182.371 | (move the point 2 places right) |
1.82371 | × | 10-2 | = | 1.82371 | × | .01 | = | .0182371 | (move the point 2 places left) |
The
exponent shows by what power of
10
to multiply the mantissa,
or (the same thing) how far to float the decimal point.
10+n
means move the decimal point n
places right.
10-n
means move the decimal point n
places left.
Write 0.000456
in scientific notation.