Answer:
[tex]\large\boxed{1.64=1\dfrac{16}{25}}[/tex]
Step-by-step explanation:
[tex]1.64=1+0.\underbrace{64}_2=1+\dfrac{64}{1\underbrace{00}_2}=1\dfrac{64}{100}=1\dfrac{64:4}{100:4}=1\dfrac{16}{25}[/tex]
