BASIC CALCULATION Short Cut Tricks) Addition

About Me Peyush B.Tech, IIT Roorkee Programming, Novels & Volleyball https://unacademy.com/user/peyush29ovn

Addition (Short Cut Tricks) Very easy to solve single digit addition Example:- 7+5-12, 3+4-7,9+7-16 For double digit simply use number line for addition Example:-78498-?, 74+62? , 86+74=? Draw number line and solve each of them 78498? 74+62=? 86+74=? . . 90 78 176 60 74 136 70 864 160

For two double digit number whose unit and tenth place are interchanged o Example:-89+98=?, 76+67=?, 45+54=? o Multiply 11 with the addition of both unit and tenth place digit o 89+98-11*17-187 o 76+67-11 13-143 o 45+54-11 9-99

. For larger numbers i.e. 4-5 digit numbers o Don't write the calculation in stack form o Simply add thousand, hundred... places and predict the upper and lower limit o Example:-63457+32146+44568+78403+84365+6385-? o Addingthousand place:-63+32-(95)+44=(139)+784217)+84-301)+6s(307) o Lower limit is 307000 and upper limit will be a maximum of 6000 more to lower i.e. 313000(because there are 6 numbers whose last 3 digits are neglected) Adding hundred place:-4+1-(5)+5=(10)+4=(14)+3=(17)+3=(20) Lower limit is 200 and upper limit will be a maximum of 600 more to lower i.e. 800(because there are 6 numbers whose last 2 digits are neglected) o o o So, Number's lower limit is 307200 and upper limit will be 307800 o Addingtenth place:-57446-(103)+68=(171)+03=(174)+65-239)+85-324) o Add this to lower limit and that will be the answer i.e. 307200+324-307524

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Ekta Jyotiana

a year ago

very nice trick to remember...thank u sir. ..

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Ankit singh rajput

a year ago

Thnx ekta for ur valuable comment... keep in touch for some more amazing lectures...🙂

Abhijit Chafekar

2 years ago

100 place pe ek h zero lagaya, aur 100 place ki upper limit thousand k lower me kyu add ki upper me krni chaiye thi i guess ????

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Peyush Gautam

2 years ago

https://unacademy.com/lesson/addition-of-4-5-digit-long-term-expression-in-hindi/31KL0TA6

Peyush Gautam

2 years ago

Please go through this link...I hope it will remove your confusion

R

Reeth

2 years ago

Confused completely with addition 4-5digit numbers

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Peyush Gautam

2 years ago

ok..I will upload a new lesson regarding that

Peyush Gautam

2 years ago

https://unacademy.com/lesson/addition-of-4-5-digit-long-term-expression-in-hindi/31KL0TA6

Peyush Gautam

2 years ago

Click on the above link... Already uploaded a video clearing all your doubts...I hope it will be helpful

Kanheya Lal

a year ago

very nice idea

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Sm

Shreyam mishra

2 years ago

Confused completely with addition 4-5 digit numbers

0

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Peyush Gautam

2 years ago

https://unacademy.com/lesson/addition-of-4-5-digit-long-term-expression-in-hindi/31KL0TA6

Peyush Gautam

2 years ago

Click on the above link... Already uploaded a video clearing all your doubts...I hope it will be helpful

Abhijit Chafekar

2 years ago

I m confused totaly

0

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Peyush Gautam

2 years ago

Please watch 6th lesson of this course...Thank you