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Express each of the following as a rational number of the form, where p and q are integers and q0:

(i) 2^{-3}

(ii) (-4)^{-2}

(iii)

(iv)

(v)

Find the values of each of the following:

(i)

(ii)

Simplify:

By what number should 5^{-1} be multiplied so that the product many be equal to (-7)^{-1}?

By what number should be multiplied so that the product may be equal to ?

By what number should (-15)^{-1} be divided so that the quotient may be equal to (-5)^{-1}?

Write each of the following in exponential form:

Evaluate:

(i) 5^{-2}

(ii) (-3)^{-2}

Express each of the following as a rational number in the form:

(i) 6^{-1}

(ii) (-7)^{-1}

Express each of the following rational numbers with a negative exponent:

(ii) 3^{5}

Express each of the following rational numbers with a positive exponent:

By what number should 5^{-1} be multiplied so that the product may be equal to (-7)^{-1} ?

By what number should (-15)^{-1} be divided so that the quotient may be equal to (-5)^{-1} ?

By what number should be multiplied so that the product may be?

Find x, if

(vi)

If x=, find the value of x^{-2}.

If x = , find the value of x^{-1}.

Find the value of x for which.

Express the following numbers in standard form:

(i) 6020000000000000

(ii) 0.00000000000942

(iii) 0.00000000085

(vi) 0.00072984

(vii) 0.000437

(viii)

Write the following numbers in the usual form:

(vii)