6. Выполните действия: 1) -2,1 × 3,8; 2) -1\(\frac{11}{13}\) × (-2\(\frac{7}{16}\)); 3) -14,16: (-0,6); 4) -18,36: 18.

Ответ:

1. -2,1 \(\times\) 3,8 = -7,98

2. -1\(\frac{11}{13}\) \(\times\) (-2\(\frac{7}{16}\)) = -\(\frac{24}{13}\) \(\times\) ( -\(\frac{39}{16}\)) = \(\frac{24 \times 39}{13 \times 16}\) = \(\frac{3 \times 3}{1 \times 2}\) = \(\frac{9}{2}\) = 4,5

3. -14,16 : (-0,6) = 23,6

4. -18,36 : 18 = -1,02

Ответ: 1) -7,98; 2) 4,5; 3) 23,6; 4) -1,02.