1) $\Large\frac{-378}{440}$ = $\Large\frac{-189.2}{220.2}$ = $\Large\frac{-189}{220}$;
2) $\Large\frac{4^7}{4^{10}}$ = $4^{7-10} = 4^{-3}$ = $\Large\frac{1}{4^{3}}$ = $\Large\frac{1}{64}$;
3) $\Large\frac{6^2}{4^{2}}$ =$\Large\frac{2.3^2}{2.2^{2}}$= $\Large\frac{3^2}{2^{2}}$
=$\Large\frac{9}{4}$;
4) $\Large\frac{4.7.22}{33.14}$ =$\Large\frac{4.7.2.11}{3.11.7.2}$ = $\Large\frac{4}{3}$
5) $\Large\frac{9.6.9-2}{18}$ = $\Large\frac{9.(6-2)}{9.2}$ = $\Large\frac{9.4}{9.2}$
= $\Large\frac{4}{2}$= $2$
6) 6) $\Large\frac{13.2-13.3}{1-14}$ = $\Large\frac{13(2-3)}{-13}$ = $\Large\frac{13(2-3)}{13.(-1)}$
= $\Large\frac{13(2-3)}{13.(-1)}$ = $\Large\frac{2-3}{-1}$ = $\Large\frac{-1}{-1}$ = $1$
