1. Вычислить: 5,43 + 4,32; 6,96 - 3,4; $$2\frac{4}{6} + 1\frac{3}{6}$$; $$\frac{2}{8} \times \frac{5}{8}$$; $$6^2 + 4^3$$

1. * $$5,43 + 4,32 = 9,75$$ * $$6,96 - 3,4 = 3,56$$ * $$2\frac{4}{6} + 1\frac{3}{6} = (2+1) + (\frac{4}{6} + \frac{3}{6}) = 3 + \frac{7}{6} = 3 + 1\frac{1}{6} = 4\frac{1}{6}$$ * $$\frac{2}{8} \times \frac{5}{8} = \frac{2 \times 5}{8 \times 8} = \frac{10}{64} = \frac{5}{32}$$ * $$6^2 + 4^3 = 6 \times 6 + 4 \times 4 \times 4 = 36 + 64 = 100$$ Ответ: * $$5,43 + 4,32 = 9,75$$ * $$6,96 - 3,4 = 3,56$$ * $$2\frac{4}{6} + 1\frac{3}{6} = 4\frac{1}{6}$$ * $$\frac{2}{8} \times \frac{5}{8} = \frac{5}{32}$$ * $$6^2 + 4^3 = 100$$