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  1. Chapter 13 Class 7 Exponents and Powers
  2. Concept wise

Transcript

Ex 13.3, 3 Express the following numbers in standard form: (i) 5,00,00,000 5,00,00,000 = 5 ร— ใ€–๐Ÿ๐ŸŽใ€—^๐Ÿ• Ex 13.3, 3 Express the following numbers in standard form: (ii) 70,00,000 70,00,000 = 7 ร— ใ€–๐Ÿ๐ŸŽใ€—^๐Ÿ” Ex 13.3, 3 Express the following numbers in standard form: (iii) 3,18,65,00,000 3,18,65,00,000 = 31865 ร— 105 = (3.1865 ร— ใ€–10ใ€—^4) ร— 105 = 3.1865 ร— ใ€–10ใ€—^4 ร— ใ€–10ใ€—^5 = 3.1865 ร— ใ€–10ใ€—^(4 + 5) = 3.1865 ร— ใ€–๐Ÿ๐ŸŽใ€—^๐Ÿ— ("Using " ๐‘Ž^๐‘šร—๐‘Ž^๐‘› " = " ๐‘Ž^(๐‘š + ๐‘›) " " ) Ex 13.3, 3 Express the following numbers in standard form: (iv) 3,90,878 3,90,878 = 3.90878 ร— 105 Ex 13.3, 3 Express the following numbers in standard form: (v) 39087.8 39087.8 = 390878/10 = 3.90878 ร— ใ€–10ใ€—^5/10 = 3.90878 ร— ใ€–10ใ€—^(5 โˆ’ 1) = 3.90878 ร— ใ€–๐Ÿ๐ŸŽใ€—^๐Ÿ’ ("Using " ๐‘Ž^๐‘š/๐‘Ž^๐‘› " = " ๐‘Ž^(๐‘š โˆ’ ๐‘›) " " ) Ex 13.3, 3 Express the following numbers in standard form: (vi) 3908.78 3908.78 = 390878/100 = 390878 ร— 1/100 = (3.90878 ร— ใ€–10ใ€—^5) ร— 1/(ใ€–10ใ€—^2 ) = 3.90878 ร— ใ€–10ใ€—^5/ใ€–10ใ€—^2 = 3.90878 ร— ใ€–10ใ€—^(5 โˆ’ 2) = 3.90878 ร— ใ€–๐Ÿ๐ŸŽใ€—^๐Ÿ‘ ("Using " ๐‘Ž^๐‘š/๐‘Ž^๐‘› " = " ๐‘Ž^(๐‘š โˆ’ ๐‘›) " " )

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.