Solve the following arithmetic problems: 1) 3/16 + 11/16 - 1/8 2) 2 3/4 + 1 1/3 3) 4 1/4 * 1.8 4) 8.08 : 2.6

Решение:

1. \( \frac{3}{16} + \frac{11}{16} - \frac{1}{8} \)


2. \( \frac{3}{16} + \frac{11}{16} = \frac{14}{16} \)


3. \( \frac{14}{16} - \frac{1}{8} = \frac{14}{16} - \frac{2}{16} = \frac{12}{16} = \frac{3}{4} \)


4. \( 2 \frac{3}{4} + 1 \frac{1}{3} \)


5. \( 2 \frac{9}{12} + 1 \frac{4}{12} = 3 \frac{13}{12} = 4 \frac{1}{12} \)


6. \( 4 \frac{1}{4} \times 1.8 \)


7. \( \frac{17}{4} \times \frac{18}{10} = \frac{17}{4} \times \frac{9}{5} = \frac{153}{20} = 7.65 \)


8. \( 8.08 : 2.6 \)


9. \( 80.8 : 26 = 3.10769... \)

Ответ: 1) 3/4; 2) 4 1/12; 3) 7.65; 4) ≈ 3.11