Question

Укажите порядок выполнения действий и найдите
значение числового выражения:

Answer 1

$\displaystyle\bf\\1)\\\\1) \ \ 8\frac{7}{12} -2\frac{17}{36} =8\frac{21}{36} -2\frac{17}{36} =6\frac{4}{36} =6\frac{1}{9} \\\\\\2) \ \ 6\frac{1}{9} \cdot2,7=\frac{55}{9} \cdot\frac{27}{10} =\frac{11\cdot3}{2} =\frac{33}{2} =16,5\\\\\\3) \ \ 4\frac{1}{3} :0,65=\frac{13}{3} :\frac{65}{100} =\frac{13}{3} :\frac{13}{20} =\frac{13}{3} \cdot\frac{20}{13} =6\frac{2}{3} \\\\\\4) \ \ 16,5-6\frac{2}{3} =16\frac{1}{2} -6\frac{2}{3} =16\frac{3}{6} -6\frac{4}{6} =15\frac{9}{6} -6\frac{4}{6} =9\frac{5}{6}$

$\displaystyle\bf\\2)\\\\1) \ \ 1\frac{11}{24} +\frac{13}{36} =1\frac{33}{72} +\frac{26}{72} =1\frac{59}{72} \\\\\\2) \ \ 1\frac{59}{72} \cdot1,44=\frac{131}{72} \cdot\frac{144}{100} =\frac{131}{72} \cdot\frac{72}{50} =\frac{131}{50} =2,62\\\\\\3) \ \ \frac{8}{15} \cdot0,5625=\frac{8}{15} \cdot\frac{5625}{10000} =\frac{8\cdot 15\cdot 375}{15\cdot 8\cdot1250} =\\\\\\=\frac{375}{1250} =0,3\\\\\\4) \ \ 2,62-0,3=2,32$