Ответ:

Делим целую и дробную части смешанного числа на указанное число.

  1. а) \(16\frac{8}{9}:8=16:8+\frac{8}{9}:8=2+\frac{1}{9}=2\frac{1}{9}\).
  2. а) \(34\frac{4}{9}:2=34:2+\frac{4}{9}:2=17+\frac{2}{9}=17\frac{2}{9}\).
  3. а) \(35\frac{5}{8}:5=35:5+\frac{5}{8}:5=7+\frac{1}{8}=7\frac{1}{8}\).
  4. б) \(120\frac{6}{7}:3=120:3+\frac{6}{7}:3=40+\frac{2}{7}=40\frac{2}{7}\).
  5. б) \(14\frac{7}{13}:7=14:7+\frac{7}{13}:7=2+\frac{1}{13}=2\frac{1}{13}\).
  6. б) \(26\frac{8}{11}:2=26:2+\frac{8}{11}:2=13+\frac{4}{11}=13\frac{4}{11}\).
  7. в) \(64\frac{16}{21}:4=64:4+\frac{16}{21}:4=16+\frac{4}{21}=16\frac{4}{21}\).
  8. в) \(38\frac{6}{11}:2=38:2+\frac{6}{11}:2=19+\frac{3}{11}=19\frac{3}{11}\).
  9. в) \(100\frac{50}{109}:25=100:25+\frac{50}{109}:25=4+\frac{2}{109}=4\frac{2}{109}\).
  10. г) \(49\frac{14}{15}:7=49:7+\frac{14}{15}:7=7+\frac{2}{15}=7\frac{2}{15}\).
  11. г) \(84\frac{42}{271}:42=84:42+\frac{42}{271}:42=2+\frac{1}{271}=2\frac{1}{271}\).
  12. г) \(100\frac{75}{647}:25=100:25+\frac{75}{647}:25=4+\frac{3}{647}=4\frac{3}{647}\).

Ответ: а) 2 1/9; 17 2/9; 7 1/8. б) 40 2/7; 2 1/13; 13 4/11. в) 16 4/21; 19 3/11; 4 2/109. г) 7 2/15; 2 1/271; 4 3/647.