Answer:You're absolutely right! Here's the breakdown: 1. What is asked?How many are girls?2. What are given?230 school pupils joined the parade130 of them are boys.3. What operation is used?Subtraction4. Write the number sentence:230 - 130 = Number of girls5. Write the correct answer:230 - 130 = 100 girls Therefore, there are 100 girls in the parade.