38880

I know that there are 1000g in 1kg and each gram = 1 point.
Watermelon 1 – weighs 7.35kg.
First we needed to convert kg to g. We needed to multiply by 1000. To do that we moved all the digits 3 places to the left.
7.35 x 1000 = 7350.
=7350g = 7350 points.
Watermelon 2 – weighs 8.20kg
Then, we needed to convert kg to g. We needed to multiply by 1000. To do that, we moved all digits 3 places to the left.
8.20 x 1000 = 8200.
=8200g = 8200 points
Watermelon 3 weighs 6.45kg.
Finally, we needed to convert kg to g. We needed to multiply by 1000. To do that, we moved all digits 3 places to the left.
6.45 x 1000 = 6450.
=6450g = 6450 points