same master measure shows different value in table and KPI

[ValeriaBonini]

Hi, i have 3 master measures, but the value is different if i put them in a table or in a KPI box

the yellow one is ok, but the others are different

How can I resolve? 

[ValeriaBonini]

"show null values" in the table was not selected.
How can I ignore null values in the master measure too??

[ValeriaBonini]

UPDATE: in my table i have many dimension with "show null values" not selected, so the value of my master measure used in the table shows a value

How can I have the same value in my KPI? how can I Ignore null values in many fields in my master measure?