1. Circle – Circumference & Perimeter – Bingo Method
Students should choose nine answers from the grid and place them
randomly into a 3x3 square in their book.
You may want to pause your display and choose questions
according to difficulty during the game.
Depending on time, students could win with
a line, an X, or a ‘full house’ (all).

2. Printing To print handouts from slides -
Select the slide from the left. Then click:
File > Print > ‘Print Current Slide’
To print multiple slides -
Click on a section title to highlight all those slides,
or press ‘Ctrl’ at the same time as selecting slides to
highlight more than one. Then click:
File > Print > ‘Print Selection’
To print double-sided handouts -
Highlight both slides before using ‘Print Selection’.
Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

3. Circumference of a Circle
BINGO! 45 54 23 82 37 12 76 25 91
Circumference of a Circle

4. Choose your numbers…
39.3
30.8
46.6
28.6
15.7
32.0
25.7
34.6
7.6
46.3
29.9
26.8
20.6
24.3
40.8
17.9
Draw a 3x3 grid in your book.

5. What is the circumference of this circle?
𝐶=π𝑑
𝐶=π ×13
13cm
40.8cm
Answer to 1 dp.

6. What is the circumference of this circle?
𝐶=π𝑑
2.5mm
𝐶=π ×5
15.7mm
Answer to 1 dp.

7. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×10
𝑃= 1 2 ×π ×10
10m
+ 10
25.7m
Answer to 1 dp.

8. What is the circumference of this circle?
𝐶=π𝑑
𝐶=π ×11
11m
34.6m
Answer to 1 dp.

9. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×12
6cm
𝑃= 1 2 ×π ×12
+ 12
30.8cm
Answer to 1 dp.

10. What is the diameter of this circle?
𝐶=π𝑑
24cm
𝑑= 𝐶 π
𝑑= 24 π
7.6cm
Answer to 1 dp.

11. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×10
𝑃= 1 4 ×π ×10
5cm
+ 2×5
17.9cm
Answer to 1 dp.

12. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×7 7m
𝑃= 1 2 ×π ×7
+ 3×7 7m
32.0m
Answer to 1 dp.

13. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×8
𝑃= 1 2 ×π ×8
8cm
+ 8
20.6cm
Answer to 1 dp.

14. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×16
8mm
𝑃= 1 4 ×π ×16
+ 2×8
28.6mm
Answer to 1 dp.

15. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×18
𝑃= 1 2 ×π ×18 9m
+ 18
46.3m
Answer to 1 dp.

16. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×8
8cm
𝑃= 3 4 ×π ×8
+ 2×4
26.8cm
Answer to 1 dp.

17. What is the perimeter of this shape?
𝐶=π𝑑
12cm
𝐶=π ×8
9cm
𝑃= 1 2 ×π ×8
+ 34
8cm
46.6cm
Answer to 1 dp.

18. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×22
11m
𝑃= 1 4 ×π ×22
+ 2×11
39.3m
Answer to 1 dp.

19. What is the perimeter of this shape?
𝐶=π𝑑
𝐶=π ×18
40° 9m
𝑃= ×π ×18
+ 2×9
24.3m
Answer to 1 dp.

20. What is the perimeter of this shape?
𝐶=π𝑑
7mm
𝐶=π ×14
𝑃= ×π ×14
130°
+ 2×7
29.9mm
Answer to 1 dp.

22. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
Any feedback would be appreciated .
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