Question

2 1/2*5/6, 4 1/2*5 1/4, 2 5/7*2 1/2, 3 2/5*2 1/3, 2 2/11*1 1/3, 7 1/2:5/4, 9:2 1/4, 3/14:1 2/7, 3 1/2:2 1/3, 3 2/3;1 1/11, 5 1/7:7 1/5, 5 2/3:3 2/5

Answer 1

2. 5/12 ..........надеюсь я правильно решила

Answer 2

Let's solve each of these expressions step by step:

1. $2 \frac{1}{2} \times \frac{5}{6} = \frac{5}{2} \times \frac{5}{6} = \frac{25}{12}.$

2. $4 \frac{1}{2} \times 5 \frac{1}{4} = \frac{9}{2} \times \frac{21}{4} = \frac{189}{8} = \frac{94}{4} = 23 \frac{1}{4}.$

3. $2 \frac{5}{7} \times 2 \frac{1}{2} = \frac{19}{7} \times \frac{5}{2} = \frac{95}{14}.$

4. $3 \frac{2}{5} \times 2 \frac{1}{3} = \frac{17}{5} \times \frac{7}{3} = \frac{119}{15}.$

5. $2 \frac{2}{11} \times 1 \frac{1}{3} = \frac{24}{11} \times \frac{4}{3} = \frac{32}{11}.$

6. $7 \frac{1}{2} \div \frac{5}{4} = \frac{15}{2} \div \frac{5}{4} = \frac{15}{2} \times \frac{4}{5} = \frac{30}{5} = 6.$

7. $9 \div 2 \frac{1}{4} = \frac{9}{1} \div \frac{9}{4} = 4.$

8. $\frac{3}{14} \div 1 \frac{2}{7} = \frac{3}{14} \div \frac{9}{7} = \frac{3}{14} \times \frac{7}{9} = \frac{1}{6}.$

9. $3 \frac{1}{2} \div 2 \frac{1}{3} = \frac{7}{2} \div \frac{7}{3} = 3.$

10. $3 \frac{2}{3} ; 1 \frac{1}{11} = 3 \frac{2}{3} + 1 \frac{1}{11} = \frac{11}{3} + \frac{12}{11} = \frac{37}{11}.$