Question

Divide:
(i) 85 by −17
(ii) −72 by 18
(iii) −80 by 16
(iv) −121 by 11
(v) 108 by −12
(vi) −161 by 23
(vii) −76 by −19
(viii) −147 by −21
(ix) −639 by −71
(x) −15625 by −125
(xi) 2067 by −1
(xii) 1765 by −1765
(xiii) 0 by −278
(xiv) 3000 by −100

Answer 1

(i) 85 by –17

= $\frac{-85}{17}$
= –5

(ii) –72 by 18

=$\frac{-72}{18}$
= –4
(iii) –80 by 16

= $\frac{-80}{16}$
= –5
(iv) –121 by 11

=$\frac{-121}{11}$
= –11

(v) 108 by –12

= $\frac{108}{-12}$
= –9
(vi) –161 by 23
= $\frac{-161}{23}$
= –7
(vii) –76 by –19

=$\frac{-76}{-19}$
= 4
(viii) –147 by –21

= $\frac{-147}{-21}$
= 7
(ix) –639 by –71

$\begin{array}{l}=\frac{-639}{-71}\\ =9\end{array}$
(x) –639 by –71

$\begin{array}{l}=\frac{-639}{-71}\\ =9\end{array}$
(x) –15625 by –125

$\begin{array}{l}=\frac{-15625}{-125}\\ =125\end{array}$


(xi) 2067 by –1

$\begin{array}{l}=\frac{2067}{-1}\\ =-2067\end{array}$

(xii) 1765 by –1765

$$\begin{gathered} \begin{array}{l}=\frac{1765}{-1765}\\ =-1\times \frac{1765}{1765}\end{array} \\ =-1\times 1 \\ =-1 \end{gathered}$$

(xiii) 0 by –278

$\begin{array}{l}=\frac{0}{-278}\\ =0\end{array}$

(xiv) 3000 by –100

$\begin{array}{l}=\frac{3000}{-100}\\ =-30\end{array}$