Add. \( 15.24+5.09 \) ० 20.33 \( \circ 21.14 \) \( \circ 66.14 \) \( \circ 20.249 \)

When you add \( 15.24 \) and \( 5.09 \), it's helpful to line up the decimal points for clarity. Adding the numbers gives you \( 20.33 \). This method ensures you don’t lose track of your decimal places, leading to accurate results! It’s also important to check your work by estimating. Rounding \( 15.24 \) to \( 15 \) and \( 5.09 \) to \( 5 \) gives you \( 20 \). So, the answer \( 20.33 \) makes sense. A quick estimation can catch any errors before they escalate!