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19 May, 23:06

An animals heart beats 80 beats per minute how many minutes does it take to beat a million times?

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  1. 19 May, 23:12
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    The key calculation in this problem is figuring out how many times 80 goes into 1,000,000. I'll build up in steps here.

    80 x 5 = 400. This gives us a building block on our way to 1,000,000. From here, we can go further and say that 400 x 5 = 2,000; that 2,000 x 5 = 10,000; and finally that 10,000 x 100 = 1,000,000. Altogether, starting from 80, that's

    80 x 5 x 5 x 5 x 100 = 80 x 25 x 500 = 80 x 12,500

    So, since 80 goes into one million 12,500 times, it takes 12,500 minutes for the animal's heart to beat that 1,000,000 times.
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