Decimal Fractions - Advanced - Examples, Exercises and Solutions

First let's fill in the zeros in the empty spaces as follows:

$21.52\\+03.40\\$Note that the decimal points are written one below the other.

Therefore, the positions of the decimal points correspond and thus the exercise is written in the correct form.

First let's fill the zeros in the empty space as follows:

$006.310\\+216.222\\\$

Here We should note that the decimal points are written one below the other.

Therefore, the exercise is written in the appropriate form.

Let's solve the problem step by step:

• Step 1: Align the numbers by their decimal points:
  $\begin{array}{c} 5.7 \\ - 2.3 \\ \hline \end{array}$
• Step 2: Subtract the digits in the tenths place $7 - 3 = 4$.
• Step 3: Subtract the digits in the units place $5 - 2 = 3$.
• Step 4: Write down the result by combining both differences, making sure to keep the decimal point aligned: $3.4$.

Therefore, the solution to the problem is $3.4$.

Note that the decimal points are not written one below the other. They do not correspond.

Therefore, the exercise is not written correctly.

Note that the decimal points are not written one below the other. They do not correspond.

Therefore, the exercise is not written correctly.