Answer: To round 2.1218 to the nearest 10th, we look at the hundredth place (the 2 in 2.12).
Since the hundredth place is 2, and the thousandth place (1) is less than 5, we round down to 2.1.
So, 2.1218 rounded to the nearest 10th is 2.1.
Step-by-step explanation:
