ВЫПОЛНИТЕ УМНОЖЕНИЕ: 1)× 4)× 7)× 8 2)× 3)× 6)× 5)× 150 8)22× 46 9) 30x77 90 이 ВЫПОЛНИТЕ ДЕЛЕНИЕ: 1) 4) 2) 5) 14 21 3) 6)25:50 7)20:40 8)63:81 9)

ВЫПОЛНИТЕ УМНОЖЕНИЕ:

1. \[\frac{2}{3} \times \frac{6}{7} = \frac{2 \times 6}{3 \times 7} = \frac{12}{21} = \frac{4}{7}\]
2. \[\frac{5}{6} \times \frac{4}{10} = \frac{5 \times 4}{6 \times 10} = \frac{20}{60} = \frac{1}{3}\]
3. \[\frac{11}{14} \times \frac{7}{22} = \frac{11 \times 7}{14 \times 22} = \frac{77}{308} = \frac{1}{4}\]
4. \[\frac{4}{15} \times \frac{5}{8} = \frac{4 \times 5}{15 \times 8} = \frac{20}{120} = \frac{1}{6}\]
5. \[\frac{3}{10} \times \frac{2}{6} = \frac{3 \times 2}{10 \times 6} = \frac{6}{60} = \frac{1}{10}\]
6. \[\frac{17}{33} \times \frac{11}{34} = \frac{17 \times 11}{33 \times 34} = \frac{187}{1122} = \frac{1}{6}\]
7. \[\frac{5}{7} \times \frac{77}{150} = \frac{5 \times 77}{7 \times 150} = \frac{385}{1050} = \frac{11}{30}\]
8. \[\frac{23}{45} \times \frac{9}{46} = \frac{23 \times 9}{45 \times 46} = \frac{207}{2070} = \frac{1}{10}\]
9. \[\frac{30}{66} \times \frac{77}{90} = \frac{30 \times 77}{66 \times 90} = \frac{2310}{5940} = \frac{7}{18}\]

ВЫПОЛНИТЕ ДЕЛЕНИЕ:

1. \[\frac{3}{7} : \frac{6}{7} = \frac{3}{7} \times \frac{7}{6} = \frac{3 \times 7}{7 \times 6} = \frac{21}{42} = \frac{1}{2}\]
2. \[\frac{1}{2} : \frac{3}{4} = \frac{1}{2} \times \frac{4}{3} = \frac{1 \times 4}{2 \times 3} = \frac{4}{6} = \frac{2}{3}\]
3. \[\frac{5}{7} : \frac{5}{7} = \frac{5}{7} \times \frac{7}{5} = \frac{5 \times 7}{7 \times 5} = \frac{35}{35} = 1\]
4. \[\frac{8}{11} : \frac{16}{77} = \frac{8}{11} \times \frac{77}{16} = \frac{8 \times 77}{11 \times 16} = \frac{616}{176} = \frac{7}{2} = 3\frac{1}{2}\]
5. \[\frac{5}{23} : \frac{15}{46} = \frac{5}{23} \times \frac{46}{15} = \frac{5 \times 46}{23 \times 15} = \frac{230}{345} = \frac{2}{3}\]
6. \[\frac{14}{25} : \frac{21}{50} = \frac{14}{25} \times \frac{50}{21} = \frac{14 \times 50}{25 \times 21} = \frac{700}{525} = \frac{4}{3} = 1\frac{1}{3}\]
7. \[\frac{18}{20} : \frac{27}{40} = \frac{18}{20} \times \frac{40}{27} = \frac{18 \times 40}{20 \times 27} = \frac{720}{540} = \frac{4}{3} = 1\frac{1}{3}\]
8. \[\frac{63}{70} : \frac{81}{270} = \frac{63}{70} \times \frac{270}{81} = \frac{63 \times 270}{70 \times 81} = \frac{17010}{5670} = 3\]
9. \[\frac{2}{33} : \frac{24}{30} = \frac{2}{33} \times \frac{30}{24} = \frac{2 \times 30}{33 \times 24} = \frac{60}{792} = \frac{5}{66}\]

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