about 20% sugar and 70% natural sugar and 10% water
Raw strawberries have about 5% sugar. They have about 0.5% sucrose, 2% glucose, and 2.5% fructose.
Personally I eat strawberries without added sugar. If you want to add sugar, try sprinkling on a teaspoon of sugar and see how you like it. It's really up to you, how you want to flavor your food.
13.22 grams per 100g
all fruits have natural sugar