Length and Perimeter - Calculate perimeter - Worksheet

This worksheet is designed to assist children in grasping the concept of calculating the perimeter of simple two-dimensional shapes. The exercises encourage students to apply their knowledge of shapes' properties and to understand the relationship between repeated addition and multiplication as methods for finding perimeters. Initially, the worksheet presents shapes with all side lengths provided, enabling children to practice adding these lengths to find the perimeter. As they progress, they encounter shapes with some side lengths missing, prompting them to deduce these missing measurements based on the given perimeters or other known side lengths.

The worksheet advances to more challenging tasks, including shapes with more complex measurements and missing lengths to be calculated. To reinforce understanding and ensure mastery, children are asked to use two different methods to calculate the perimeter of squares, highlighting that all sides of a square have equal length. Additionally, reasoning and problem-solving sections challenge students to apply their knowledge in different scenarios. For example, they must evaluate statements about the perimeters of shapes with equal side lengths and determine if knowing just one side length is sufficient to find the perimeter of these shapes. The worksheet provides a comprehensive approach to learning about perimeters, enhancing both fluency and precision in mathematical calculations.