Social Studies Application: Remembering that 1AD came immediately after 1BC, while solving these problems take 1BC as –1 and 1AD as +1
a. The Greeco-Roman era, when Greece and Rome ruled Egypt started in the year 330 BC and ended in the year 395 AD. How long did this era last?
b. Bhaskaracharya was born in the year 1114 AD and died in the year 1185 AD. What was his age when he died?
c. Turks ruled Egypt in the year 1517 AD and Queen Nefertis ruled Egypt about 2900 years before the Turks ruled. In what year did she rule?
d. Greek mathematician Archimedes lived between 287 BC and 212 BC and Aristotle lived between 380 BC and 322 BC. Who lived during an earlier period

Solution:

To answer the given questions let us examine the problem deeply using the properties of integers. Let us assume 1 BC as -1 and 1 AD as +1.

a) If the starting year = 330 BC, then this means it is equal to (-330)AD.

We have given the ending year = 395 AD.

The era lasted for = 395 - (-330) = 725 years.

b)In the given problem the born year = 1114 AD

The death year = 1185 AD

Total age of Bhaskaracharya = Death year - Born year

Total age = 1185 - 1114 = 71 Years

c)In the above mentioned problem it is given that Turks ruled Egypt in 1517 AD

Now according to the given data Queen Nefertis ruled Egypt in (1517-2900) AD = -1383 AD or 1383 BC.

d)It is mentioned in the problem that Archimedes lived between 287 BC and 212 BC. Aristotle lived between 380 BC and 322 BC. Therefore, according to the given data, Aristotle lived during an earlier period.

✦ Try This: Fill in the blank: a. -7772 + (-13892) = ____. b. -177896 + __ = -323

Now to fill the given blank we can apply integer rules and the rules of order of operations.

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 1

NCERT Exemplar Class 7 Maths Chapter 1 Exercise Problem 112

Social Studies Application: Remembering that 1AD came immediately after 1BC, while solving these problems take 1BC as –1 and 1AD as +1. a. The Greeco-Roman era, when Greece and Rome ruled Egypt started in the year 330 BC and ended in the year 395 AD. How long did this era last? b. Bhaskaracharya was born in the year 1114 AD and died in the year 1185 AD. What was his age when he died? c. Turks ruled Egypt in the year 1517 AD and Queen Nefertis ruled Egypt about 2900 years before the Turks ruled. In what year did she rule?  d. Greek mathematician Archimedes lived between 287 BC and 212 BC and Aristotle lived between 380 BC and 322 BC. Who lived during an earlier period

Summary:

After applying the integer rules we examined that the following parts can be answered in the respective manner. a) 725 years, b) 71 Years, c) -1383 AD or 1383 BC, d) The Aristotle lived during an earlier period

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