Question

If 3.485 divided by 5.1 is written in long division form as 51 divided by 34850 so that the divisor is written as a whole number where should the decimal point be placed in the dividend?

Answer 1

You would move it between the 4 and 8 because you only moved the decimal place one place to the right with the divisor. You would move it the same amount with the dividend to make it 34.84 divided by 51.

Answer 2

Between
`4` and
`8`

Explanation:

We are given with the fraction
`(3.485)/(5.1)`

it can be expanded as
`((3485)/(1000) )/((51)/(10) ) \\`

which can then be simplified to

`((3485)/(100) )/(51)`

and further to

`(34.85)/(51)`

so in order to make the divisor a whole number, the decimal should be placed between
`4` and
`8` in the dividend.