Step 1: Locate and underline the tenth place (4) and look to the right (8)
1.48
Step 2: In this case, the digit to the right 8 is 5 or above. So, we add 1 to the tenth place 4. The digit at the right 8 becomes 0, thus we get 1.5 as the answer.
In short: 1.48 rounded to the nearest tenth is 1.5.
Hope that helped