1. Вычислите: а)52,462 + 4,98; б) 36,423 – 8,71; в) 17\(\frac{7}{14}\) - 5\(\frac{3}{14}\) - 6\(\frac{1}{14}\); г) 4\(\frac{3}{17}\) - 2\(\frac{5}{17}\); д) 8,43·5,7; е) 3,22: 2,8.

Решение:

1. а) 52,462 + 4,98
   \( 52,462 + 4,98 = 57,442 \)
2. б) 36,423 – 8,71
   \( 36,423 - 8,71 = 27,713 \)
3. в) 17\(\frac{7}{14}\) - 5\(\frac{3}{14}\) - 6\(\frac{1}{14}\)
   \( 17\frac{7}{14} - 5\frac{3}{14} - 6\frac{1}{14} = (17 - 5 - 6) + (\frac{7}{14} - \frac{3}{14} - \frac{1}{14}) = 6 + \frac{7-3-1}{14} = 6 + \frac{3}{14} = 6\frac{3}{14} \)
4. г) 4\(\frac{3}{17}\) - 2\(\frac{5}{17}\)
   \( 4\frac{3}{17} - 2\frac{5}{17} = (3 + \frac{17+3}{17}) - 2\frac{5}{17} = 3\frac{20}{17} - 2\frac{5}{17} = (3-2) + (\frac{20}{17} - \frac{5}{17}) = 1 + \frac{15}{17} = 1\frac{15}{17} \)
5. д) 8,43·5,7
   \( 8,43 \times 5,7 = 48,051 \)
6. е) 3,22: 2,8
   \( 3,22 \div 2,8 = 1,15 \)

Ответ: а) 57,442; б) 27,713; в) 6\(\frac{3}{14}\); г) 1\(\frac{15}{17}\); д) 48,051; е) 1,15.