Solution

38881

First name
Steph
School
St Mary of Charity Primary School
Country
Age
11

I know that there are 1000g in 1 kg.
Watermelon 1 weighs 7.35kg. First you have to convert it into g, so you have to x by 1000.
7.35 x 1000 = 7350.
Watermelon 1 weighs 7350g, so if each gram is 1 point, watermelon 1 gets 7350 points.
Watermelon 2 weighs 8.20kg. First you have to convert it into g, which means you have to x by 1000.
8.20 x 1000 = 8200.
Watermelon 2 weighs 8200g, so if each gram is 1 point, watermelon 2 gets 8200 points.
In the end Watermelon 3 weighs 6.45kg. First you have to convert it into g, so you have to x by 1000.
6.45 x 1000 = 6450.
Watermelon 3 weighs 6450g, so if each gram is 1 point, watermelon 3 gets 6450 points.