Class 5 Maths Chapter 11, Grandmother’s Quilt, uses quilt lace borders and square patchwork rugs to develop the concepts and formulas for the perimeter and area of rectangles, squares and triangles on square grids.
What Class 5 Mathematics Chapter 11 Covers
Border Lace & Perimeter of Shapes calculates the boundary length (perimeter) of squares, rectangles and regular polygons, and draws different rectangles that share the exact same perimeter.
Patchwork Rugs, Square Grids & Area counts unit square patches to find the area of rectangles and squares (Area = length × breadth), compares how rectangles of equal perimeter can have different areas (and vice versa), and finds the area of triangles as half of a rectangle.
Exercises in Chapter 11
- Let Us Do, Let Us Think, and Let Us Solve practice exercises.
- Interactive number games, visual grids, and hands-on puzzles.
Read Class 5 Mathematics Chapter 11 Online
More Chapters
- Previous: Chapter 10: Symmetrical Designs
- Next: Chapter 12: Racing Seconds
- Hindi medium: Class 5 Maths Chapter 11 PDF in Hindi (Ganit Mela)
- All Mathematics chapters and the other Class 5 books: Class 5 NCERT books 2026-27
- All Class 1 to 12 NCERT Textbooks: NCERT Books PDF (Class 1–12)
- Every book chapter by chapter: NCERT chapter wise PDF
FAQ
What is the difference between the perimeter and the area of a quilt?
The perimeter is the total length of the outer border around the quilt (measured in units like cm or m), whereas the area is the amount of surface enclosed inside the quilt (measured in square units).
If two rectangles have the same perimeter of 20 cm, do they have the same area?
Not necessarily: a 6 cm × 4 cm rectangle has perimeter 20 cm and area 24 sq cm, whereas an 8 cm × 2 cm rectangle also has perimeter 20 cm but area only 16 sq cm.