Question

2. Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by
rounding off to nearest tens):By giving hole solution


(a) 439 + 334 + 4317
(b) 1,08,737 - 47,599
(c) 8325-491
(d) 4,89,348 - 48,365​

Answer 1

Answer:

a.rough estimate=5000,closer estimate=44,090

b.rough estimate=61,100,closer estimate=61,140

c.rough estimate=7,800,closer estimate=7,840

d.rough estimate=4,40,900,closer estimate=4,40,980

Step-by-step explanation:

a.439-400

334-300

4317-4300

rough estimated sum =400+300+4300=5000

a.439-440

334-330

4317-4320

closer estimated sum =440+330+4320=44,090

b.1,08,737-1,08,700

47,599-47,600

rough estimated difference =1,08,700-47,600=61,100.

b.1,08,737-1,08,740

47,599-47,600

closer estimated difference=1,08,740-47,600=61,140

c.8,325-8300

491-500

rough estimated difference=8,300-500=7,800

c.8,325-8330

491-490

closer estimated difference=8,330-490=7,840

d.4,89,348-4,89,300

48,365-48,400

rough estimated difference=4,89,300-48,400=4,40,900

d.4,89,348-4,89,350

48,365-48,370

closer estimated diffference=4,89,350-48,370=4,40,980

hope this helps

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