subtracting negative rational numbers 0.25 - (-1.50)=

0.25 - (-1.5) = 0.25 + 1.5 = 1.75

To subtract negative rational numbers, you can follow these steps:

Step 1: Rewrite the problem using addition. Replace the subtraction sign with its equivalent addition sign and change the sign of the second number. So, the problem becomes 0.25 + 1.50.

Step 2: Line up the decimal places of both numbers. Make sure to align the digits based on the decimal point.

0.25
+ 1.50
_______

Step 3: Perform the addition as usual.

0.25
+ 1.50
_______
1.75

Therefore, 0.25 - (-1.50) equals 1.75.