(i) 1 by

=

= 1

= 2

(ii) 5 by

= 5 ÷

= 7

= -7

(iii) by

=

=

=

(iv) by

=

=

=

(v) by

=

=

=

(vi) 0 by

=

=

= 0

(vii) by -6

=

=

=

(viii) by

=

=

=

=

(ix) by

=

=

=

(x) by

=

=

=