We have the questions asking about farmer land use in the order

How many hectare of cultivated land you have ? answer in decimal
1.1 How many hectare of CROP 1 cultivated land you have? answer in decimal
1.2 How many hectare of CROP 2 cultivated land you have? answer in decimal

To validate the land - 1.1 +1.2 = 1 if not it showed the message that they need to redo it

We started having problem when data collector answer as :

How many hectare of cultivated land you have ? 2.64
1.1 How many hectare of CROP 1 cultivated land you have? 2.32
1.2 How many hectare of CROP 2 cultivated land you have? 0.32

But the validating message showed the sum of 1.1. and 1.2 as: 2.6399999999999997
which has 13th decimal- and this is not match with the total number which inputted in 1 which is 2.64

Sorry for late response. I did use the round up for the input in _1_1 , _1_2, _1_3, and 1_4 and the response was incorrect and it was when I think round up was not the function

But I have removed them from the mentioned question, and only use round up with result of the sum (_1_1 + _1_2 + _1_3 + _1_4) and it works.

Hope that the enumerator will not add more than 2 digits:) , thanks for your help a lot.