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Q.

On rounding off the primary number upward and also the second number downward, the product

$472 × 158$ is ____.

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Detailed Solution

On rounding off the primary number upward and also the second number downward, the product

472 × 158

is 50000.
The given numbers are 472 and 158.
Rounding off upwards means assuming the number to be greater than or up to 5 so round it off accordingly, whereas rounding off downwards means assuming the number to be smaller than 5 then round it off accordingly.
For 472: After rounding off 472 upwards = 500.
For 158: After rounding off 158 downwards = 100.
Calculate the product of the two numbers:

500 × 100 = 50000

Thus, the product is calculated to be 50000.

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