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Rounding Off

Recap|Significant Figures|Rounding Off|Rules For Rounding Off|Significant Figures In Addition And Subtraction|Significant Figures In Multiplication And Division|Important Points|Summary

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 – 48,365 Make four more such examples.

The population of a town was 78787 in the year 1991 and 95833 in the year 2001. Estimate the increase in population by rounding off each population to nearest hundreds.

Recap|Estimation: Practice Proplem|OMR