Question

2. Вычислите: а) 11/32×8
в)8/51×17/20
б)17/18×1 1/5
г)5/8÷15
д)1 2/9÷7 1/3
е)9/20÷3/5​

Answer 1

Ответ:

$1) \frac{11}{32} \times 8 = \frac{11}{4} \times 1 = 2 \frac{3}{4} = 2.75 \\ 2) \frac{8}{51} \times \frac{17}{20} = \frac{2}{3} \times \frac{1}{5} = \frac{2}{15} \\ 3)1 \frac{2}{9} \div 7 \frac{1}{3} = \frac{11}{9} \times \frac{3}{22} = \frac{1}{6} \\ 4)1 \frac{7}{18} \times 1 \frac{1}{5} = \frac{25}{18} \times \frac{6}{5} = \frac{5}{3} = 1 \frac{2}{3} \\ 5) \frac{5}{8} \div 15 = \frac{5}{8} \times \frac{1}{15} = \frac{1}{24} \\ 6) \frac{9}{20} \div \frac{3}{5} = \frac{9}{20} \times \frac{5}{3} = \frac{3}{4} = 0.75$