Estimation and rounding are useful tools, but they can be tricky when dealing with complicated math.

1. Problems with Estimation:

   • The answers might not be right.
   • You could miss important details.

2. Rounding Problems:

   • Rounding can cause big mistakes.
   • Some numbers don’t round off nicely.

To avoid these problems:

• Get comfortable using benchmarks to help with estimation.
• Always double-check your calculations to make sure they’re correct.