Question

срочно пожалуйста с.р​

Answer 1

$1.$

$a) \: \: \: \: \: 40 \div 8 = 5$

$b) \: \: \: \: \: 3 \div 15 = 0.2$

$c) \: \: \: \: \: 1.4 \div 5.6 = 0.25$

$d) \: \: \: \: \: \frac{3}{16} \div \frac{5}{12} = \frac{3}{16} \times \frac{12}{5} = \frac{9}{20}$

$2.$

$a) \: \: \: \: \: \frac{3}{8} \div \frac{5}{6} = \frac{3}{8} \times \frac{6}{5} = \frac{9}{20}$

$b) \: \: \: \: \: 1 \div \frac{2}{7} =1 \times \frac{7}{2} = \frac{7}{2} = 3.5$

$c) \: \: \: \: \: 2.2 \div 3.3 = \frac{22}{10} \div \frac{33}{10} = \frac{22}{10} \times \frac{10}{33} = \frac{2}{3}$

$d) \: \: \: \: \: 1 \frac{7}{18} \div 3 \frac{4}{9} = \frac{25}{18} \div \frac{31}{9} = \frac{25}{18} \times \frac{9}{31} = \frac{25}{62}$

$3.$

$a) \: \: \: \: \:x \div 2 \frac{1}{3} = 3 \frac{1}{2}$

$x \div \frac{7}{3} = \frac{7}{2} \\ x = \frac{7}{2} \times \frac{7}{3} \\ x = \frac{14}{6} = 2 \frac{1}{3}$

$b) \: \: \: \: \: \frac{8}{y} = 0.2$

$y = 8 \div 0.2 \\ y = 40 \: \: \: \: \: \: \: \: \:$