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.
Estimate each of the following products by rounding off each number
to nearest tens:
(a) 87 × 32
(b) 311×113
(c) 3239 × 28
(d) 1385 × 789
Estimate each of the follwoing by rounding off each number to nearest
tens:
(a) 11963 – 9369
(b) 76877 – 7783
(c) 10732 – 4354
(d) 78203 – 16407
Estimate each of the following by rounding off each number to nearest
hundreds:
(a) 874 + 478
(b) 793 + 397
(c) 11244 + 3507
(d) 17677 + 13589
A box contains 50 packets of biscuits each weighing 120g. How
many such boxes can be loaded in a van which cannot carry beyond
900kg?
Make the greatest and the smallest 5-digit numbers using different
digits in which 5 appears at ten’s place.
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