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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