Tommy ordered a total weight of 10 kilograms of apple, orange, grape, and strawberry fruits. He ordered 3 kilograms of apples, 1 kilogram of orange, and 3 kilograms of grapes. How many kilograms of strawberries did he order?
Tommy ordered 3 + 3 + 1 = <<3+3+1=7>>7 kilograms of apples, oranges and grapes altogether.
Therefore, Tommy ordered 10 - 7 = <<10-7=3>>3 kilograms of strawberries.
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