Rounding Numbers (Quiz with Immediate Feedback)

① This interactive quiz demonstrates how to round numbers to a specified place value (e.g., ones, tens, hundreds) with instant feedback on correctness. ② The core math concepts are place value and rounding rules, including understanding digit weights and deciding whether to round up or down. ③ Construction highlights: The applet uses GeoGebra's Random command to generate random numbers, a Textfield for student input, and a button (button1) to trigger checking; objects include multiple texts (text1 to text19) for displaying questions, hints, and feedback, along with variables a through w storing random values, answers, and states. ④ Suitable for upper elementary or middle school students, this applet serves as a practice tool for reinforcing rounding skills in class or self-study, and can also be used by teachers for demonstration.