6th Chapter 1
( Knowing our Numbers )
Part 3
Q No 1 A machine, on an average, manufactures
2,825 screws a day. How many screws did it produce in the month of January 2006?
Q No 2 A merchant had Rs 78,592 with her. She
placed an order for purchasing 40 radio sets at Rs 1200 each. How much money
will remain with her after the purchase?
Q No 3 A student multiplied
7236 by 65 instead of multiplying by 56. By how much was his
answer greater than the correct answer?
Q No 4 To stitch a shirt, 2
m 15 cm cloth is needed. Out of 40 m cloth, how many shirts can be
stitched and how much cloth will remain?
Q No 5 Medicine is packed in boxes, each
weighing 4 kg 500g. How many such boxes can be loaded in a van which cannot
carry beyond 800 kg?
Q No 6 The distance between the school and
the house of a student’s house is 1 km 875 m. Everyday she walks both ways.
Find the total distance covered by her in six days.
Q No 7 A vessel has 4 litres and 500 ml of
curd. In how many glasses, each of 25 ml capacity, can it be filled?
Q No 8 Round off the given numbers to the nearest tens, hundreds
and thousands.
Given
Number Approximate to Nearest Rounded Form
75847 Tens
75847 Hundreds
75847 Thousands
75847 Ten
thousands
Q No 9 Estimate: 5,290 + 17,986.
Q No 10 Estimate: 5,673 – 436.
Q No 11 following products :
(a) 87 × 313 (b) 9 × 795 (c) 898 × 785 (d) 958 × 387
Q No 12 Estimate each of the
following using general rule:
(a) 730
+ 998 (b) 796 – 314
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
Estimate
the following products using general rule:
(a) 578
× 161 (b) 5281 × 3491
Q No 13 Write in Roman Numerals (a) 69 (b) 98. C) 159 d) 549
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