0,7-0,25

To calculate \(0.7 - 0.25\):

1. Align the decimal points: \[ \begin{array}{r} 0.70 \\ -0.25 \\ \hline \end{array} \]

2. Subtract starting from the right:

   • In the hundredths place: \(0 - 5\) can't be done, so we need to borrow. This turns the 7 in the tenths place into 6, making the 0 in the hundredths place become 10. Now, \(10 - 5 = 5\).
   • In the tenths place: \(6 - 2 = 4\).
   • In the units place: \(0 - 0 = 0\).

Putting that together, the result is: \[ 0.70 - 0.25 = 0.45 \]

So, \(0.7 - 0.25 = 0.45\).