a) Enter the actual age in completed years in the right side square box and then fill out the oval box accordingly.

b) If the age of an individual is seven years then fill out the 0 oval box on the upper line and 7 oval box in the next line.

c) If the age is more than one year but less than two years fill out 01 and 00 for less than one year.

d) If the respondent could not say the actual age, give the reference of important events as annexed in annex A and ask how many years before or after the event the person was born? Someone could say the date of birth in the Bengali month. In this case, use the conversion table calendar to convert from Bengali to English as annexed in annex B. Remember that in any case do not enter age data on assumption. Verify that you have the correct age, whether you have been able to collect the actual information or not, with the help of the following information.

(i) The difference in age between a mother and child will not be less than 15 years and for father not less than 18.

(ii) Difference in age between two children (except twins) of a mother will not be less than one year. If the actual age is different from the age mentioned in the educational certificate enter the actual age.

(iii) Enter the actual age in the specified field for age and fill out 9 in the upper line and 9 in the next line for person aged 100 years and over. Finally, verify the age data of all members of the household doing the calculations of adding and subtracting when actual age of a person will find out.