What is $3.02 \times 5.98 + 11.97$ approximately equal to?

Explanation

1. 01

   $3.02 \approx 3$, $5.98 \approx 6$ and $11.97 \approx 12$.

2. 02

   Multiply first: $3 \times 6 = 18$; then add: $18 + 12 = 30$.