Answer :
Final answer:
To find the number of grains of sand in 1,000 kilograms of sand, divide the mass of the sand by the mass of a single grain of sand.
Explanation:
To find the number of grains of sand in 1,000 kilograms of sand, we need to convert the mass of the sand into grams. Since 1 kilogram is equal to 1000 grams, 1,000 kilograms is equal to 1,000,000 grams. Next, we divide the mass of the sand by the mass of a single grain of sand: 1,000,000 grams divided by 10^(-3) grams per grain of sand. This gives us a total of 10^9 grains of sand.
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