a)
[tex]1 \div 2.5 = 1 \div \frac{25}{10} = 1 \times \frac{10}{25} = \frac{10}{25} = \frac{40}{100} = 0.4[/tex]
b)
[tex]1 \div 0.08 = 1 \div \frac{8}{100} = 1 \times \frac{100}{8} = \frac{100}{8} = 12.5[/tex]
c)
[tex]1 \div 1.6 = 1 \div \frac{16}{10} = 1 \times \frac{10}{16} = \frac{10}{16} =\frac{5}{8}= 0.625[/tex]
