Decimal & Fraction BY: MAYANK AGNIHOTR

FRACTION A fraction simply tells us how many parts of a whole quantity we have. nurnerator 4 5 -denominator DECIMAL A decimal is a fraction written in a special form. EX: Instead of writing 1/2 we can express the fraction as the decimal 0.5. MIXED FRACTION A mixed fraction is a whole number and proper fraction combined. Ex: 11 = 5, 2 -- 4 42 2 DECIMAL FRACTION Fractions in which denominators are powers of 10 are known as decimal fractions EX:-= 0.1 one tenth = 0.01 = one hundreth 10 100

Conversion of a decimal into Fraction 2.008-2008-251 1000 125 25 1 0.25 = 100 _-; Note Adding 0 to the extreme right of a decimal fraction does not change its value. Ex : 0.8 = 0.80 = 0.800 If numerator and denominator of a fraction has same no. of decimal places then we remove the decimal sign. Ex : 1.84 = 184 2.99 299 O Operations on Decimals Fraction Addition and Subtraction of Decimal Fraction 2.543 3.4672.543 +3.467 6.010 3.554-2.465= 3.554 2.465 1.089 Multiplication of Decimal Fraction by power of 10 . 5.9632 x 100 = 596.32 5.9632 x 10-2-0.059632

Multiplication of Decimal Fraction 0.2 x 0.02 = 2 x 2 x 10-3 = 0.004 ; 5.2 x 0.2 = 52 x 2 x 10-2-1.04 Dividing a Decimal Fraction by a counting number . 0.0204 17 204 17 10-4 = 12 10-4 0.0012 Dividing a Decimal Fraction by a Decimal fraction 0.066 100 0.066 0.00066 0.11 = 11 x 103-0.006 11X100 11 0 I Converting fraction to decimals 0.6 4.25 30.6 5/ 3 17 - 4.25 30 -30 0 - 16 10 20 20

Questions Ques 1. Evaluate 31.0040-17.2386 31.0040 - 17.2386 Sol 13.7654 Ans 44404444 10 100 1000 10000 4 Ques 2. Find the value of 4 Sol 44.44.04 0.444 0.0004 12.8844 Ans 6 Ques 3. How many 1o are there in 6 12 5 10 12 Sol so if we add 1 12 times we get 10 . there are 12 1 in

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Mayank Agnihotri

B.Tech (ECE), Machine enthusiast, Inspired by an old hindi saying " Gyan baatne se badhta ha"

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Anjna Gaur

a year ago

Sir i am in stress i don't know kiya kru

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Vidhu Vireshwar Sharma

a year ago

Why are you stressed? You have covered each and every aspect of the syllabus everything is prepared.. Then why stress.. Keep calm.. Everything's gonna be great. Best of luck

Anjna Gaur

a year ago

Sir it is that moment if i wrote in exams than my whole future spoiled. Because there is no means of studying if i m cbse board student not got 95% in exams

Vidhu Vireshwar Sharma

a year ago

Hey hey.. Dont panic.. It happens with every student but stay strong and believe in yourself. You can surely do whatever you want.

Anjna Gaur

a year ago

Sir really i will do sucide if i not got 95% in final exam

Vidhu Vireshwar Sharma

a year ago

No.. Thsi is not the way.. You live only. Once make. The most of. It. Thsi is not. The end... Have faith

Vidhu Vireshwar Sharma

a year ago

And guess what class 12th percentage doesn't really matter that much in real. World.. Foucs on skill development and learning and try to maintain decent score.. You. Can do wonders in your life.. Best of luck and just remove these kind of negative thoughts from your mind.

Pawan Arya

7 months ago

aapka special clss aata h kya

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