Solution

39122

First name
Basma
School
Edith Neville Primary School
Country
Age
9

First of all I had 3 measurements to start with which were 1) 7.35kg , 2) 8.20kg and 3) 6.45kg.
Then I converted it to thousands took away the decimal points and changed it to grams.
So after I had 1) 7350g , 2) 8200g and 3) 6450g.
Last but not least I changed it to points finally I had 1) 7350 points , 2) 8200 points and 3) 6450 points and that's my solution.