Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate(by rounding off to nearest tens) :(a) 439 + 334 + 4,317 (b) 1,08,734 – 47,599 (c) 8325 – 491(d) 4,89,348 – 48,365Make four more such examples.

Give a rough estimate (by rounding off to nearest hundreds) and also a

1.	Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate(by rounding off to nearest tens) :(a) 439 + 334 + 4,317 (b) 1,08,734 – 47,599 (c) 8325 – 491(d) 4,89,348 – 48,365Make four more such examples.
Answer» (a) `439+334+4317` When rounding off to nearest hundreds, `400+300+4300 = 5000` When rounding off to nearest tens, `440+330+4320 = 5090` (b) `108734 - 47599` When rounding off to nearest hundreds, `108700 - 47600 = 61400` When rounding off to nearest tens, `108730 - 47600 = 61430` (c) `8325 - 491` When rounding off to nearest hundreds, `8300 - 500 = 7800` When rounding off to nearest tens, `8330 - 490 = 7840` (d) `489348 - 48365` When rounding off to nearest hundreds, `489300 - 48400 = 440900` When rounding off to nearest tens, `489350 - 48370 = 440980`