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Important Formulas: Exponents and Powers | Mathematics (Maths) Class 7 PDF Download

Important Formulas

(1) If a is a non-zero rational number and n is a natural number, then the product a x a x a x a (n time) is denoted by an and is read as 'a raised to the power n'. Rational number 'a' is called the base and natural number n is known as the exponent. Also, an  is known as the exponential form a x a x a x a (n time).
(2) For any non-zero rational number, we have a0 = 1 and a1 = = 1
(3) If a and b are non-zero rational numbers and m and n are natural numbers, then following are the laws of exponents:
(i) Important Formulas: Exponents and Powers | Mathematics (Maths) Class 7
(ii) Important Formulas: Exponents and Powers | Mathematics (Maths) Class 7
(iii) Important Formulas: Exponents and Powers | Mathematics (Maths) Class 7
(iv) Important Formulas: Exponents and Powers | Mathematics (Maths) Class 7
(v) Important Formulas: Exponents and Powers | Mathematics (Maths) Class 7

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