Ex 3.3, 6 - Write a digit in blank space if number is divisible by 11

Ex 3.3, 6 - Chapter 3 Class 6 Playing with Numbers - Part 2

Ex 3.3, 6 - Chapter 3 Class 6 Playing with Numbers - Part 3 Ex 3.3, 6 - Chapter 3 Class 6 Playing with Numbers - Part 4

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Transcript

Ex 3.3, 6 Write a digit in the blank space of each of the following numbers so that the number formed is divisible by 11 : (a) 92 __ 389To check divisibility by 11, we check Sum of digits at odd Places − Sum of digits at even Places Given numbers 9 2 __ 3 8 9 Sum of digits at odd Places = 9 + 3 + 2 = 14 Sum of digits at even Places = 8 + _ + 9 = 17 + _ Let us check different value of blank digits & find difference So Blank digit is 8 Ex 3.3, 6 Write a digit in the blank space of each of the following numbers so that the number formed is divisible by 11 : (b) 8 __ 9484To check divisibility by 11, we check Sum of digits at odd Places − Sum of digits at even Places Given Number 8__ 9484 Sum of digits at odd Places = 4 + 4 + _ = 8 + _ Sum of digits at even Places = 8 + 9 + 8 = 25 Let us check different values of blank digits And find difference So Blank digit is 6

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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.