1. Can you work out the area of each shape?
Starter
Can you work out the area of each shape?
Each square is 1 cm².

2. Area: the amount of space th shape takes up. Measured in cm², m², mm².
Glossary
Area: the amount of space th shape takes up. Measured in cm², m², mm².
Perimeter: the distance around the edge of the shape. Measured in cm, m, mm.
Area
Perimeter

3. Count the squares inside the shape
Area =

4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Area =
42 cm²

5. Count the squares around the edge
Area =
42 cm²
Perimeter =

6. Area = 42 cm² Perimeter = 26 cm 7 8 9 10 11 12 13 6 14 5 15 4 16 3 1718 1 19 26 25 24 23 22 21 20
Area =
42 cm²
Perimeter =
26 cm

7. Can you work out the area of each shape?
Review
Can you work out the area of each shape?
Each square is 1 cm².
20 cm²
24 cm²
15 cm²

8. Task
Complete the dominoes activity by matching each question to its answer.
Cut along the bold lines only.
Each square is 1 cm².

9. Answers

10. Area = 12 cm² 3 lots of 4 3 x 4 = 12 cm² 3 lots of 5 3 x 5 = 15 cm²

11. Area = 6 lots of 8 6 x 8 = 48 cm² Area = 5 lots of 5 5 x 5 = 25 m²

12. Perimeter = 8 + 6 + 8 + 6 = 28 cm Perimeter = 5 + 5 + 5 + 5 = 20 m

13. Place any nine numbers below into the grid (repeats forbidden) 13

14. Find the area
5 cm
6 cm
30 cm² 14

15. Find the perimeter
1 cm
5 cm
12 cm 15

16. Find the area
6 cm
9 cm
54 cm² 16

17. Find the area
3 cm
8 cm
24 cm² 17

18. Find the area
3 cm
11 cm
33 cm² 18

19. Find the perimeter
10 cm
14 cm
48 cm 19

20. Find the area
7 cm
9 cm
63 cm 2 20

21. Find the area
7 cm
7 cm
49 cm² 21

22. Find the perimeter
9 cm
9 cm
36 cm 22

23. Find the area
2 cm
5 cm
10 cm² 23

24. Does it matter that it’s a triangle?
Find the perimeter
Does it matter that it’s a triangle?
3 cm
3 cm
3 cm
9 cm 24

25. Find the area
3 cm
5 cm
15 cm² 25

26. Find the perimeter
4 cm
4 cm
16 cm 26

27. Find the area
5 cm
5 cm
25 cm² 27

28. Find the area
3 cm
7 cm
21 cm² 28

29. Find the area
5 cm
11 cm
55 cm² 29

30. Answers A = 15 cm² A = 1 cm² A = 24 cm² P = 16 cm P = 4 cm P = 20 cm
A = 12.5 cm² A = 2 cm² A = 0.75 m²
P = 15 cm P = 7.4 cm P = 4 m
A = m² A = 0.6 cm² A = 39 mm²
P = 5.3 m P = 3.4 cm P = 3.2 mm
18 cm 9 cm² 30 cm
22 m 20 mm² 56 mm²

31. Starter Match the area and perimeter to its rectangle.
Fill in the missing cards.

32. Answers

33. How can we calculate the area of this compound shape?
Split it into two rectangles.
6 cm
4 x 6 =
24 cm²
4 cm
6 cm
8 cm
8 x 4 =
32 cm²
8 cm
4 cm =
56 cm²
10 cm
? cm
10 – 6 = 4 cm

34. Answers
13 cm² 66 cm²
42 cm² 126 cm²
112 cm² 108 cm²

35. Answers
22 cm 34 cm
30 cm 49 cm
56 cm 66 cm

36. What is the area of triangle A?
Hint: What is the relationship between a rectangle and a triangle?
height
Hint: How could you use the area of a rectangle to work out the area of a triangle?
base

37. Work out the area of the triangle.
4cm
6cm
Area of triangle = ½ x 6 x 4
Area of triangle = ½ x 24
Area of triangle = 12cm2

38. Work out the area of the triangle.
Area of triangle = ½ x 5 x 7
Area of triangle = ½ x 35
7cm
Area of triangle = 17.5 cm2
5cm

39. Answers Extension: 21 x 2 = 42 42 ÷ 7 = 6cm ½ x 7 x 4 = 14cm2

40. How can we calculate the area of this parallelogram?
6 cm
5 cm
5cm
5cm

41. How can we calculate the area of this parallelogram?
4 cm
2 cm
5 cm
5cm
5cm

42. How can we calculate the area of this parallelogram?
4 cm
2 cm
5 cm
2 cm
4 cm

43. How can we calculate the area of this parallelogram?
5 cm
2 cm
4 cm

44. How can we calculate the area of this parallelogram?
5 cm
6 x 5 = 30 cm²
6 cm

45. What about this one?
7 x 9 = 63 cm²
7 cm
9 cm

46. 15 cm²
56 cm²
49 cm²
64 cm² A B C D

47. 20 cm²
45 cm²
180 cm²
36 cm² A B C D

48. 80 cm²
20 cm²
100 cm²
18 cm² A B C D

49. Area and Perimeter Bingo
Draw a 3 x 3 grid (what’s its area?) and fill it with 9 of the numbers below. Don’t forget to include units!
21 m²
10 cm²
12 m²
6 m
1 m²
4 m
20 cm²
5 cm²
13 m²
8 cm²
16 cm²
24 m
17 m²
7 m²
9 m²
14 cm²
18 m²
19 cm²
15 cm²
3 m
23 cm²
22 cm²
2 m²
11 m²

50. What is the area of this shape?
4 cm
5 cm

51. What is the area of this shape?
2 cm
8 cm

52. What is the area of this shape?
6 cm
4 cm

53. What is the area of this shape?
3 m
7 m

54. What is the area of this shape?
1 m
17 m

55. What is the area of this shape?
4 cm
2 cm

56. What is the area of this shape?
7 cm
4 cm

57. What is the area of this shape?
2 m
9 m

58. What is the perimeter of this shape?

59. What is the area of this shape?
1 m
13 m

60. What is the perimeter of this shape?

61. What is the area of this shape?
5 cm
2 cm

62. What is the perimeter of this shape?

63. What is the area of this shape?
1 m
1 m

64. What is the area of this shape?
2 cm
5 cm

65. What is the area of this shape?
5 cm
6 cm

66. What is the area of this shape?
1 m
2 m

67. What is the perimeter of this shape?

68. What is the area of this shape?
2 cm
11 cm

69. What is the area of this shape?
1 m
11 m

70. What is the area of this shape?
1 m
7 m

71. What is the area of this shape?
1 cm
19 cm

72. What is the area of this shape?
3 m
3 m

73. What is the area of this shape?
1 cm
23 cm

74. How can we calculate the area of this trapezium?b h h b a

75. a + b h a + b How can we calculate the area of this trapezium?
Area of parallelogram = h (a + b)

76. a + b h a + b How can we calculate the area of this trapezium?
Area of trapezium = ½ h (a + b)

77. a h b How can we calculate the area of this trapezium?
Area of trapezium = ½ h (a + b)

78. 5 cm ½ x 8 x (5 + 7) = ½ x 8 x 12 8 cm = ½ x 96 = 48 cm² 7 cm
What about this one?
5 cm
½ x 8 x (5 + 7)
= ½ x 8 x 12
8 cm
= ½ x 96
= 48 cm²
7 cm

79. Answers
30 cm² 18 cm² 121 cm² 168 cm²
77 cm² 54 cm² 18 cm² 16.9 cm²