NCERT Class 6 Solutions: Knowing Your Numbers (Chapter 1) Exercise 1.2 – Part 2

Numbers arranged in descending order

Understanding Descending Order

Numbers arranged in descending order

Numbers arranged in ascending order

Understanding Ascending Order

Numbers arranged in ascending order

  • To form largest number arrange the given digits in descending order such that the smallest digit comes in the most significant position.

  • To form smallest number arrange the given digits in ascending order such that the largest digit comes in the most significant position.

Q-5 Find the difference between the greatest and the least number that can be written using the digits 6, 2, 7, 4, 3 each only once

Solution:

  • Greatestnumber=76432

  • Smallestnumber=23467

  • Diffrence=7643223467=52965

    Given the digits 6, 2, 7, 4, 3 find the diffrence between the greatest and tge least number

    Digits 6, 2, 7, 4, 3

    Given the digits 6, 2, 7, 4, 3 find the diffrence between the greatest and tge least number

    Therefore, the diffrence between the greatest and the least number that can be written using the digits 6,2,7,4,3 each only once is 52,965

Q-6 A machine, on an average, manufactures 2,825 screws a day. How many screws did it produce in the month of January 2006?

Solution:

  • Screwsproducedinoneday=2,825

  • Daysinjanuary=31

  • Screwsproducedin31days=2825×31

    On average a machine manufactures 2825 screws a day, find the how many screws did it produce in the month of january 2006

    Screws Produced by Machine in January

    On average a machine manufactures 2825 screws a day, find the how many screws did it produce in the month of january 2006

Therefore , screwsproducedduringjanuary2006=87,575

Q-7 A merchant had Rs.78,592 with her. She placed an order for purchasing 40 radio sets at Rs.1,200 each. How much money will remain with her after the purchase?

Solution:

  • Costofoneradioset=Rs.1,200

  • Costof40radiosets=1,200×40=Rs.48,000

  • MoneywithMerchant=Rs.78,592

  • Moneyspent=Rs.48,000

  • Moneyleft=78,59248,000

    Merchant had Rs.78,592 with her. She placed an order for purchasing 40 radio sets at Rs.1,200 each and find the how much money will remain with her after the purchase

    Money Left With the Mechant

    Merchant had Rs.78,592 with her. She placed an order for purchasing 40 radio sets at Rs.1,200 each and find the how much money will remain with her after the purchase

Therefore, Rs.30,592 will remain with her after the purchase

Q-8 A student multiplied 7236 by 65 instead of multiplying by 56. By how much was his answer greater than the correct answer?

Solution:

  • Wronganswer=7236×65

    A student multiplied 7236 by 65 and got wrong answer

    Multiplication of Two Numbers

    A student multiplied 7236 by 65 and got wrong answer

  • Correctanswer=7236×56

    Find correct value of multiplication and find the how much was the answer greater than correct answer

    Correct Value of Multiplication

    Find correct value of multiplication and find the how much was the answer greater than correct answer

  • Diffrenceinanswers=4,73,0404,05,216

  • Diffrenceinanswers=65,124

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