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Write opposites of the following:, (a) Increase in weight, , (b) 30 km North, , (c) 326 BC, , (d) Loss of $700, , (e) 100 m above sea level., Solution:, , (a) Decrease in weight, , (b) 30 km South, , (c) 326 AD, , (d) Profit of 700, , (e)100 m below sea level.

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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., Solution:, , (a) +2000 m, , (b) -800 m, (c) + $200, (d) - 700

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Here A represents + 5., Here B represents — 10., , = ES, , Represent the following numbers on a number, , line: ,, , (d) -1, , (e) -6, Solution:, (a), , (b), , (ec), , i, , ro, , =, , - se, , T, , 10 Oia AF <6 6 oe <9 od, , , , D, ®, heme, T, “1, , Here C and C’ represent + 8., , 1, T, 2, , 4, , tT, , or, Here, D represents — 1., , 4, T, , , , (d) +

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the following points:, , D+ +8, , zo fF WO, , ™ ©, , (a) If point D is +8, then which point is -8?, (b) Is point G a negative integer or a positive, integer?, , (c) Write integers for points B and E., , (d) Which point marked on this number line, has the least value?, , (e) Arrange all the points in decreasing order, of value.

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Following is the list of temperatures of five, places in India on a particular day of the year., , Place Temperature, , Siachin 10°C below O°C saaceneee, Shimla 2°ChelowO°C aceeneee, Ahmedabad 30°C above O°C aceae eee, Delhi. 20°C above O°C i aaaeene, Srinagar B°C below O°C aa ae eet, , (a) Write the temperatures of these places in, the form of integers in the blank column., (b) Following is the number line representing, , the temperature in degree Celsius., SHH EEE, , 5-9 -15 100 8 6 5S 10 15 2% 9 30 98 4, Plot the name of the city against its, temperature., , (c) Which is the coolest place?, , (d) Write the names of the places where, temperatures are above 10°C.