Question

How to calculate antilog

Answer 1

1. Separate the characteristic and the mantissa. Like in 2.6452. The characteristic is 2, and the mantissa is 6452.
2. Use the antilog table to find a corresponding value for mantissa. Here check the row number beginning with .64, then the column for 5. You will find the value is 4416.
3. Find the value from the mean difference columns. Here again use the row number beginning with .64, but find the column for 2 you will get the value is 2.
4. Add the values obtained in the previous steps. Here add 4416 and 2 to get 4418.
5. Add the decimal point. Here characteristic is 2 so add 2 and 1 to get 3, then insert the decimal point after 3 digits. Hence the antilog of 2.6452 will be 441.8.