Chapter 8: Fractions ke Saath Kaam
Hum fractions jodna-ghataana jaante hain. Ab unka guna aur bhaag karenge: poore numbers se aur doosre fractions se. Kshetrafal se dekhenge ki niyam kyun chalte hain, jaanenge kab guna-phal aur bhaagphal bada ya chhota hota hai, aur asli aur aitihaasik sawaal hal karenge, chai ke cup se fawwaaron aur Līlāvatī ke mashhoor mazaak tak.
Is chapter mein tum
- fractions ko poore numbers aur fractions se guna karna
- kshetrafal model aur common factors kaatna
- reciprocal se bhaag karna
- fractions ke shabd-sawaal hal karna
Topics
- Fractions ka Multiplication NCERT 8.1
a/b × c/d = (a × c)/(b × d); pehle common factors kaato.
- Fractions ka Bhaag NCERT 8.2
a/b ka reciprocal b/a; guna-phal 1.
- Fractions ke Kuch Sawaal NCERT 8.3
"Ka" matlab guna; barabar baantna matlab bhaag.
Key words
- Product
- guna ka nateeja
- Reciprocal
- ulta fraction: 3/5 ↔ 5/3
- Cancelling
- guna se pehle numerator aur denominator ko common factor se bhaag
- Dividend
- jise bhaag diya jaata hai
- Divisor
- jisse bhaag dete hain
- Quotient
- bhaag ka nateeja
Summary
- a/b × c/d = (a × c)/(b × d), Brahmagupta ka niyam; pehle common factors kaato.
- Fraction bhujaon wale aayat ka kshetrafal unka guna.
- Bhaag ke liye bhaajak ke reciprocal se guna: a/b ÷ c/d = a/b × d/c.
- 0 aur 1 ke beech wale se guna (ya bhaag) chhota (ya bada) karta hai.