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Gomes found the masses of three rocks for a science project.The first rock had a mass of 19.29 grams,the second rock had a mass of 25.3 grams,and the third rock had a mass of 46.3 grams.How much greater was the mass of the third rock than the combined mass of the other two rocks?

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Mass of first rock is 19.29
Mass of second rock is 25.3
Mass of third rock is 46.3

Add up the mass of the first and second rock.
19.29 + 25.3 = 44.59

Now, we need to know how much greater the mass of the third rock is than the combined mass of the other two rocks. That means subtraction.

46.3 - 44.59 = 1.71

Your answer is 1.71.

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