Evaluate: 30 − (−50)

One Line Answer

30 – (–50)
= 30 + 50
= 80

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Chapter 4 Integers
Test Paper 4 | Q 6.5 | Page 78

Write the opposite of the following: 24

Find the sum of: −389 and −1032

Write the successor of the following: 70

For the following statement write (T) for true and (F) for false:

|8 − 5| = |8| + |−5|

Multiply: 18 by −7

Find the product: 8 × 7 × (−10)

Write (T) for true and (F) for false for the following statement:

20 ÷ (−5) = −4

Simplify: (−24) × (68) + (−24) × 32

Additive inverse of −23 is

Remembering that 1AD came immediately after 1BC, while solving these problems take 1BC as –1 and 1AD as +1.

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?
Bhaskaracharya was born in the year 1114 AD and died in the year 1185 AD. What was his age when he died?
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?
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?