Represent the following numbers as integers with appropriate signs.
(a) An aeroplane is flying at a height two thousand metre above the ground.
(b) A submarine is moving at a depth, eight hundred metre below the sea
level.
(c) A deposit of rupees two hundred.
(d) Withdrawal of rupees seven hundred
To do:
We have to represent the given numbers as integers with appropriate signs.
Solution:
(a) We take the ground level(sea level) as zero and everything above it as positive.
Therefore,
The given number as integer with appropriate sign is $+2000\ m$.
(b) We take the sea level as zero and everything below it as negative.
Therefore,
The given number as integer with appropriate sign is $-800\ m$.
(c) ‘A deposit of rupees two hundred' $ = +200₹$
The sign should be $+$ because we are depositing it in our bank account.
$+200₹ $ is an integer representation of the sentence ‘A deposit of rupees two hundred.'
(d) Withdrawal of rupees seven hundred $= -700₹$
The sign should be $-$ because we are withdrawing it from our bank account.
$-700₹$ is an integer representation of the sentence 'Withdrawal of rupees seven hundred'.
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- The Hundred Dresses - II
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