The following steps will be useful to express a number in scientific notation.
Step 1 :
Adjust the decimal point such that there is only one non zero digit on the left side of the decimal point.
Step 2 :
Count the number of digits between the old and new decimal point. This gives n, the power of 10.
Step 3 :
If the decimal is shifted to the left, the exponent n is positive. If the decimal is shifted to the right, the exponent n is negative.
Example 1 :
Write the following number in scientific notation.
9345
Solution :
In the given number, we could not see the decimal point. So, we have to consider the decimal point is at last.
9345.
Now we have to shift this decimal point to the left side, three digits. So, we have to take positive power.
9.345 x 103
Example 2 :
Write the following number in scientific notation.
3449098.96
Solution :
3449098.96
Now we have to shift this decimal point to the left side, six digits. So, we have to take positive power.
3.44909896 x 106
Example 3 :
Write the following number in scientific notation.
0.0063
Solution :
0.0063
Now we have to shift this decimal point to the right side, three digits. So, we have to take negative power.
6.3 x 10-3
Example 4 :
Write the following number in scientific notation.
0.00008035
Solution :
0.00008035
Now we have to shift this decimal point to the right side, five digits. So, we have to take negative power.
8.035 x 10-5
Example 5 :
Write the following number in scientific notation.
0.000108
Solution :
0.000108
Now we have to shift this decimal point to the right side, four digits. So, we have to take negative power.
1.08 x 10-4
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