Question

Convert the given unlike decimals to like decimals:

$2.1,1.25,1.284$

Answer 1

The numbers are $2.1,1.25,1.284$

The number of decimal places in $2.1=1$

The number of decimal places in $1.25=2$

The number of decimal places in $1.284=3$

The maximum number of decimal places in given decimals is $3$

We know that writing zero to the right of the decimal places does not change the number

So, we write each number with three decimal places by adding zeros

$\begin{array}{rcl}2.1& =& 2.100\\ 1.25& =& 1.250\\ 1.284& =& 1.284\end{array}$

Therefore, $2.100,1.250,1.284$are the required like terms