Question

Which of the following correctly represents 5.8 × 5 after writing 5.8 as a fraction?

Options

• `58/10` × `5/1`

• `58/100` × `5/1`

• `5/1` × `8/10`

• `5/10` × `8/1`

Answer 1

`58/10` × `5/1`

Explanation:

5.8 has one decimal place, so it is written as `58/10`; multiplying by 5 means multiplying by `5/1`.

So, 5.8 × 5 = `58/10` × `5/1`