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2016-04-24T00:04:57+05:30

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Round to the nearest place value, drop the zeros and multiply the whole numbers, add the total number of zeros to the product.

578 * 161 = 600 * 200 = 6*2 = 12 + 0000 = 120,000

5271 * 3491 = 5000 * 3000 = 5 * 3 = 15 + 000000 = 15,000,000

1291 * 592 = 1000 * 600 = 1 * 6 = 6 + 00000 = 600,000

925 * 29 = 900 * 30 = 9 * 3 = 27 + 000 = 27,000

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