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  1. Chapter 1 Class 7 Integers
  2. Serial order wise
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Ex 1.1, 9 Use the sign of >, < or = in the box to make the statements true. (a) ( 8) + ( 4) ( 8) ( 4) ( 8) + ( 4) = 8 4 Taking common = (8 + 4) = 12 ( 8) ( 4) = 8 + 4 Taking common = (8 4) = 4 12 4 Ex 1.1, 9 Use the sign of >, < or = in the box to make the statements true. (b) ( 3) + 7 (19) 15 8 + ( 9) 3 + 7 19 = 3 19 + 7 Taking common = (3 + 19) + 7 = 22 + 7 = 15 15 8 + ( 9) = 15 8 9 Taking common = 15 (8 + 9) = 15 17 = 2 15 2 Ex 1.1, 9 Use the sign of >, < or = in the box to make the statements true. (c) 23 41 + 11 23 41 11 23 41 + 11 = 23 + 11 41 = 34 41 Taking common = ( 34 + 41) = (41 34) = 7 23 41 11 Taking common = 23 (41 + 11) = 23 52 Taking common = ( 23 + 52) = (52 23) = 29 7 29 Ex 1.1, 9 Use the sign of >, < or = in the box to make the statements true. (d) 39 + ( 24) (15) 36 + ( 52) ( 36) 39 + ( 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 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

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.