[tex] \frac{1}{2} \times 0.5 - 0.25 = \frac{1}{2} \times \frac{1}{2} - \frac{1}{4} = \frac{1}{4} - \frac{1}{4} = 0[/tex]
[tex]1 + \frac{2}{5} \times 1.5 = 1 + \frac{2}{5} \times \frac{3}{2} = 1 + \frac{1}{5} \times 3 = 1 + \frac{3}{5} = \frac{8}{5} = 1.6[/tex]
[tex] \frac{1}{2} + \frac{1}{3} \times 15 = \frac{1}{2} + 5 = \frac{11}{2} = 5.5[/tex]
[tex]2 \div 8 + 0.75 = 0.25 + 0.75 = 1[/tex]
