Question

Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate
(by rounding off to nearest tens):
4,89,348 – 48,366

Answer 1

By rounding off to nearest hundreds, the rough estimate of their difference can be calculated as:

4,89,348 can be rounded off to 4,89,300.
48,366 can be rounded off to 48,400.
Hence, the estimated difference = 4,89,300 - 48,400 = 4,40,900

By rounding off to nearest tens, the rough estimate of their difference can be calculated as:

4,89,348 can be rounded off to 4,89,350.
48,366 can be rounded off to 48,370.
Hence, the estimated difference = 4,89,350 - 48,370 = 4,40,980.