How do you multiply mixed rational numbers like a decimal and a fraction?
See explanation below.
To multiply two rational numbers without a calculator, it is easiest to express them both as fractions, then multiply their numerators and denominators.
For example, if you have
You can express
How did I know that
Try to see that 1.6 can be expressed as:
Similarly, if we had a really weird number like 1.234, we can do the same thing:
Using this method, ANY rational number, by definition, can be expressed as a fraction.
Hope this helps!