Question

What is `0.9944-:0.8`?

Answer 1

`0.9944-:0.8=1.243`

Explanation:

As `0.9944=9944/10000` and `0.8=8/10`

`0.9944-:0.8=9944/10000-:8/10`

Further as dividing by a fraction is equivalent to multiplying by fraction's multiplicative inverse

`0.9944-:0.8=9944/10000xx10/8`

Now `9944` is divisible be `8` and `9944-:8=1243`, hence

`0.9944-:0.8=(1243cancel(9944))/(1000cancel(10000))xx(cancel10)/cancel8=1243/1000=1.243`

In short, one can divide `0.9944` by `0.8` simply by dividing `9944` by `8`, which gives us `1243` and then placing decimal after three places `4-1=3`, which gives us `1.243`.