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Ex 1.1, 9 - Chapter 1 Class 7 Integers - Part 5

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Ex 1.1, 9 Use the sign of >, < or = in the box to make the statements true. (e) – 231 + 79 + 51 ⎕ –399 + 159 + 8139 + (– 24) – (15) ⎕ 36 + (– 52) – (– 36) 39 + (– 24) – (15) = 39 − 24 − 15 Taking – common = 39 − (24 + 15) = 39 − 39 = 0 36 + (– 52) – (– 36) = 36 − 52 + 36 = 36 + 36 − 52 = 72 − 52 = 20 0 ⎕ 20 0 < 20 Ex 1.1, 9 Use the sign of >, < or = in the box to make the statements true. (e) – 231 + 79 + 51 ⎕ –399 + 159 + 81–231 + 79 + 51 = −231 + 130 Taking – common = −(231 − 130) = −101 – 399 + 159 + 81 = −399 + 240 Taking – common = −(399 − 240) = −159 −101 ⎕ −159 −101 ⎕ −159

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.