Percentages - Percentages (missing values) - Presentation

In a mathematics presentation focused on percentages, particularly on calculating missing values, students are encouraged to apply their knowledge and discover efficient strategies. The lesson prompts learners to think about different methods for finding percentages, such as determining 30% of a given amount. For example, one of the activities involves calculating the number of tourists who visited Buckingham Palace in the remaining weeks of a month, given that 15% visited in the first week and 40% in the second week. Students learn to subtract these percentages from the total (100%) to find the remaining percentage and then calculate the number of tourists by applying this percentage to the total number of visitors.

Further activities aim to deepen understanding by presenting various scenarios where students must find missing values. One exercise asks what the total number would be if 8 represents 10% of it, guiding students to use a bar model for visualization. Another activity involves finding 30% of different numbers, helping students see the connection between the questions and reinforcing their skills in percentage calculations. The presentation also includes reasoning tasks that challenge students to formulate percentage questions based on a bar model and to fill in missing values to complete mathematical statements correctly. Through these exercises, students explore different ways to solve percentage problems and consider the most efficient methods for finding missing values.