RS Aggarwal Class 8 Math First Chapter Rational Numbers Exercise 1D Solution

EXERCISE 1D

(1) Find each of the following products:

(2) Verify each of the following:

(3) Verify each of the following:

(4) Fill in the blanks:

(5) Find the multiplicative inverse (i.e., reciprocal) of:

(6) Find the value of:

(7) Verify the following:

(8) Name the property of multiplication illustrated be each of the following statements:

(9) Fill in the blanks:

(i) The product of a rational number and its reciprocal is 1.

(ii) Zero has no reciprocal.

(iii) The numbers 1 and (-1) are their own reciprocals.

(iv) Zero is not the reciprocal of any number.

(v) The reciprocal of a, where a ≠ 0, is 1/a.

(vi) The reciprocal of 1/a, where a ≠ 0, is a.

(vii) The reciprocal of a positive rational number is positive.

(viii) The reciprocal of a negative rational number is negative.