Grade 3 · Maths · Lessons
Covering it with squares
🟦square🧱tiles🔍no gaps🔢count
Cover it.The big ideaCover it with squares. No gaps, no overlaps. Count them.
How it works
Cover a shape with squares. No gaps and no overlaps.
Count the squares to find the area.
The squares must all be the same size.
Example 1: Cover a floor
- A floor is 4 tiles wide and 4 tiles long.
- 4 × 4 = 16.
- It takes 16 tiles.
Example 2: Gaps
- One floor has a gap between tiles.
- Gaps mean it is not covered properly.
- Choose the floor with no gaps.
Example 3: A card
- A card is 3 cm by 3 cm.
- 3 × 3 = 9 squares.
- Its area is 9 square centimeters.
Words to know
- overlap
- To cover part of another.
- gap
- An empty space between.
Watch out
- No gaps and no overlaps.
- Squares must be the same size.
- Count every square once.
Try it
- A rug is 3 tiles by 5 tiles. How many tiles cover it?
- Can there be gaps when you cover a shape?
- Can squares overlap?
- A card is 2 cm by 6 cm. What is its area?
Answers: 1. 15 · 2. no · 3. no · 4. 12 square cm
For grown-upsCover a book with sticky notes with no gaps or overlaps and count them.