$(+2) - \sqrt{13}$

$-\sqrt{8} + 4 - \sqrt{8}$

$(-2) - \sqrt{5}$

$(-6) + \sqrt{10}$

$(12 \div 0.01) \times 1.9 = $

$(0.01 \div 0.5) + 2.95 = $

$8.65 \times 10^{4} + 2.92 \times 10^{3} = $