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

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

Count the squares inside the shape Area =

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

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

Area = 42 cm² Perimeter = 26 cm 7 8 9 10 11 12 13 6 14 5 15 4 16 3 17 18 1 19 26 25 24 23 22 21 20 Area = 42 cm² Perimeter = 26 cm

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

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

Answers

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

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

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

Place any nine numbers below into the grid (repeats forbidden) 24 12 25 63 49 48 15 36 21 54 30 16 9 10 55 33 13

Find the area 5 cm 6 cm 30 cm² 14

Find the perimeter 1 cm 5 cm 12 cm 15

Find the area 6 cm 9 cm 54 cm² 16

Find the area 3 cm 8 cm 24 cm² 17

Find the area 3 cm 11 cm 33 cm² 18

Find the perimeter 10 cm 14 cm 48 cm 19

Find the area 7 cm 9 cm 63 cm 2 20

Find the area 7 cm 7 cm 49 cm² 21

Find the perimeter 9 cm 9 cm 36 cm 22

Find the area 2 cm 5 cm 10 cm² 23

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

Find the area 3 cm 5 cm 15 cm² 25

Find the perimeter 4 cm 4 cm 16 cm 26

Find the area 5 cm 5 cm 25 cm² 27

Find the area 3 cm 7 cm 21 cm² 28

Find the area 5 cm 11 cm 55 cm² 29

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 = 1.615 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

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

Answers

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 24 + 32 = 56 cm² 10 cm ? cm 10 – 6 = 4 cm

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

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

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

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

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

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

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

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

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

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

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

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

15 cm² 56 cm² 49 cm² 64 cm² A B C D

20 cm² 45 cm² 180 cm² 36 cm² A B C D

80 cm² 20 cm² 100 cm² 18 cm² A B C D

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

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

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

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

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

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

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

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

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

What is the perimeter of this shape?

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

What is the perimeter of this shape?

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

What is the perimeter of this shape?

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

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

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

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

What is the perimeter of this shape?

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

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

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

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

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

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

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

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

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

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

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

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