45 out of the 50 students at a school assembly were first-grade students. What percentage of the students at the assembly were first-graders? Write your answer using a percent sign (\%).

To find the percentage of first-grade students at the assembly, you can use the formula: (Number of first-graders / Total number of students) × 100. Here, there are 45 first-graders out of 50 students, so (45 / 50) × 100 = 90%. Therefore, 90% of the students at the assembly were first-graders. Now, let’s sprinkle some fun facts! Did you know that the concept of percentage dates back to ancient civilizations? The word itself comes from the Latin "per centum," meaning "by the hundred." It's fascinating how percentages play a crucial role in finance, statistics, and even everyday decisions, like calculating discounts when shopping! Also, understanding percentages helps develop strong analytical skills. Next time you're evaluating a deal or examining statistics, remember it’s not just about the numbers—it's about making informed decisions! Looking to explore the world of percentages further? You can find engaging activities and online quizzes that put your skills to the test in a fun way!