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12th Pre-Board All Pdf NCERT With Salutations

 NCERT Class 12th All Questions PDF PDF  All Files In one click Click Here To See ❣️
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Class 7 Mathematics formulas

 

Class 7 Mathematics formulas

  1. Product of rational numbers = (Product of Numerators) / (Product of Denominators)
  2. First Rational Number × (Reciprocal of other Rational Number)
  3. Area of a Square = Side2
  4. The perimeter of a Square = 4 × Side
  5. Area of Rectangle = Length × Breadth
  6. Perimeter of a Rectangle = 2 × (Length + Breadth)
  7. Area of a Parallelogram = Base × Height
  8. Area of Triangle = 1/ 2 × Base × Height
  9. Circumference of a circle = π d, where ‘d’ is the diameter of a circle and π = 22/7 or 3.14
  10. Area of a circle = πr2
  11. Law of Product: am × an = am+n
  12. Law of Quotient: am/an = am-n
  13. Law of Zero Exponent: a0 = 1
  14. Law of Negative Exponent: a-m = 1/am
  15. Law of Power of a Power: (am)n = amn
  16. Law of Power of a Product: (ab)m = ambm
  17. Law of Power of a Quotient: (a/b)m = am/bm
  18. (a-b) 2 = a2 – 2ab + b2 
  19. (a-b-c)2 = a2 + b2 + c2 – 2ab + 2bc – 2ac

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