Question

formulas for fraction class 7 important formulas​

Answer 1

Answer:-

•Proper fraction:- a/b where b>a

Example: 2/5,3/7 etc.

•Improper fraction :- a/b where a>b

Example:- 5/2,7/3 etc.

•Mixed fraction:- 1½

•Like fractions (same denominator):-

1/2,3/2,5/2,7/2etc.

•Product of two fractions:- (3/5)×(7/3)=(3×7)/(5×3)=21/15

•Reciprocal fractions:- 3/2 and 2/3

•Addition of fractions :- (p/q)+(x/y)=(py+qx)/(qy)

Example:- (2/3)+(3/5)=(2×5+3×3)/(3×5)=(10+9)/15=19/15

•Subtraction of fractions:- (p/q)−(x/y)=(py−qx)/qy

Example:- (2/3)−(3/5)=(2×5−3×3)/(3×5)=(10−9)/15=1/15

•Multiplication of fractions:-

(a/b)×(c/d)=(a×c)/(b×d)=ac/bd

•Division of fractions:- (a/b)÷(c/d)=(a×d)/(b×c)=ad/bc

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