In KS2 Maths, children learn about perimeter and area. In Year Five, they figure out how to find the perimeter of squares and rectangles. Now, they also explore other shapes like pentagons or hexagons and learn to calculate their area. Kids become confident with areas of squares and rectangles, understanding that square metres have 10,000 square cm, and square cm have 100 square mm.

The perimeter is the distance around a shape. To find a hexagon's perimeter, multiply one side's length by 6. For example, if the sides are 2 metres long, the perimeter is 12 metres. Area is like the size of a surface, important for planning how much paint a wall needs. Can you figure out the perimeter of a hexagon?

Test what you know about area and perimeter with this quiz for 9-10 year olds!

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1 .

What is the formula for calculating the perimeter of a rectangle?

2 x length x 2 x width

2 x length + 2 x width

Length + width

Length x width

2 sides of a rectangle are one length whilst the other two sides are a different length, for example 2 sides are 4cm long and the other 2 sides are 6cm long. This rectangle would have a perimeter of 20cm

2 .

A regular hexagon has a perimeter of 54cm. What is the length of the sides?

6cm

9cm

12cm

20cm

A regular hexagon has 6 equal sides. To calculate the length of each side, divide the perimeter by 6

3 .

How many cm^{2} is equivalent to 1m^{2}?

10cm^{2}

100cm^{2}

1,000cm^{2}

10,000cm^{2}

There are 100cm in 1m so 100 x 100 = 10,000

4 .

What is the perimeter of a regular pentagon with sides of 5cm?

24cm

100cm

10cm

25cm

A pentagon has 5 sides, therefore 5 x 5cm will give you the perimeter

5 .

What is the formula for calculating the perimeter of a regular hexagon?

4 x length of side

6 x length of side

6 x length + width

Length of side divided by 6

As a regular hexagon has 6 equal sides, just multiply the length of the sides by 6

6 .

Which would be a suitable unit to measure the area of a chunk of chocolate?

Square grams

Square metres

Square millimetres

Square millilitres

Grams measure weight and millilitres measure volume. Square metres measure area but chocolate bars aren't that big!

7 .

Which would be a good estimate of the area of a classroom?

1,000mm^{2}

100mm^{2}

10m^{2}

100m^{2}

10m^{2} would be large enough for a room in a house but not big enough for a classroom

8 .

A rectangle has a perimeter of 38cm. The shortest sides are 7cm. What length are the two longest sides?

12cm

14cm

21cm

28cm

2 x 7 = 14

38 - 14 = 24

24 ÷ 2 = 12

38 - 14 = 24

24 ÷ 2 = 12

9 .

What is the formula for calculating the area of a rectangle?

2 x length x 2 x width

2 x length + 2 x width

Length + width

Length x width

If a rectangle measured 7cm by 10cm its area would be 70cm^{2}

10 .

Which would be best measured in cm^{2}?

Area of a playground

Area of a town

Area of a desk top

Area of a pen tip

Towns might be measured in km^{2}, playgrounds in m^{2} and pen tips in mm^{2}

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