Let's write the approximate value of the following number up to lacs, thousands and hundreds place. Actual number Approximate up to lacs Approximate up to 1000 ' s Approximate up to 100 ' s 2678945

Here, we have 2678945 We know that the approximate value is either slightly less or slightly more than the exact value. If the last five digits of a number is more than or equal to 50000 , then the number is rounded off to the next multiple 100000 . For 2678945 the last five digits are 78945 , which is more than 50000 . Hence, 2678945 ≈ 2700000 [Up to lacs places] If the last three digits of a number is more than 500 then the number is rounded off to the next multiple of 1000 . For 2678945 last three digits are 945 , which is more than 500 . Hence, 2678945 ≈ 2679000 [Up to thousand places] If the last two digits of a number is less than 50 then the number is rounded off to the previous multiple of 100 . For 2678945 last two digits are 45 , which is less than 50 . Hence, 2678945 ≈ 2678900 [Up to hundred places] Actual number Approximate up to lacs Approximate up to 1000 ' s Approximate up to 100 ' s 2678945 2700000 2679000 2678900

Let's write the approximate value of the following number up to lacs, thousands and hundreds place. Actual number Approximate up to lacs Approximate up to 1000 ' s Approximate up to 100 ' s 3124487

Here, we have 3124487 We know that the approximate value is either slightly less or slightly more than the exact value. If the last five digits of a number is less than 50000 , then the number is rounded off to the previous multiple 100000 . For 3124487 the last five digits are 24487 , which is less than 50000 . Hence, 3124487 ≈ 3100000 [Up to lacs places] If the last three digits of a number is less than 500 then the number is rounded off to the previous multiple of 1000 . For 3124487 last three digits are 487 , which is less than 500 . Hence, 3124487 ≈ 3124000 [Up to thousand places] If the last two digits of a number is greater than equal to 50 then the number is rounded off to the next multiple of 100 . For 3124487 last two digits are 87 , which is more than 50 . Hence, 3124487 ≈ 3124500 [Up to hundred places] Actual number Approximate up to lacs Approximate up to 1000 ' s Approximate up to 100 ' s 3124487 3100000 3124000 3124500

Let's write the approximate value of the following number up to lacs, thousands and hundreds place. Actual number Approximate up to lacs Approximate up to 1000 ' s Approximate up to 100 ' s 1356921

Here, we have 1356921 We know that the approximate value is either slightly less or slightly more than the exact value. If the last five digits of a number is greater than or equal to 50000 , then the number is rounded off to the next multiple of 100000 . For 1356921 the last five digits are 56921 , which is more than 50000 . Hence, 1356921 ≈ 1400000 [Up to lacs places] If the last three digits of a number is greater than or equal to 500 then the number is rounded off to the previous multiple of 1000 . For 1356921 last three digits are 921 , which is more than 500 . Hence, 1356921 ≈ 1357000 [Up to thousand places] If the last two digits of a number is less than 50 then the number is rounded off to the previous multiple of 100 . For 1356921 last two digits are 21 , which is less than 50 . Hence, 1356921 ≈ 1356900 [Up to hundred places] Actual number Approximate up to lacs Approximate up to 1000 ' s Approximate up to 100 ' s 1356921 1400000 1357000 1356900

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GANITPRABHA (MATHEMATICS TEXT BOOK) CLASS 7>Chapter 10 - Approximation of Values>Let's workout

West Bengal Board Solutions for Chapter: Approximation of Values, Exercise 5: Let's workout

Author:West Bengal Board

West Bengal Board Mathematics Solutions for Exercise - West Bengal Board Solutions for Chapter: Approximation of Values, Exercise 5: Let's workout

Attempt the practice questions on Chapter 10: Approximation of Values, Exercise 5: Let's workout with hints and solutions to strengthen your understanding. GANITPRABHA (MATHEMATICS TEXT BOOK) CLASS 7 solutions are prepared by Experienced Embibe Experts.