1. Revising Perimeter Area and Volume
Revising Length
Revising Perimeter
Revising Area
Revising Volume 1
Revising Volume 2
Revising Weight
20-Sep-18
Created by Mr. Lafferty Maths Dept.

2. Created by Mr. Lafferty Maths Dept.
Starter Questions
Q1. Solve the equation 3a = 27
Q2. Find two numbers that multiply to give 18
and subtract to give 3.
Q3. Solve the equation x – 30 = 55
Q4. True or false x = 27
20-Sep-18
Created by Mr. Lafferty Maths Dept.

3. Created by Mr. Lafferty Maths Dept.
Length
Learning Intention
Success Criteria
1 We are revising length.
Be able identify units on a ruler.
2. Be able to measure accurately length of an object.
3. Be able to convert units of length.
20-Sep-18
Created by Mr. Lafferty Maths Dept.

4. Start at 0 NOT the edge of the ruler
Measuring a Line
3.9 cm
9.1 cm

5. Drawing Lines
Draw a line 4.2 cm
Draw a line 9.4 cm

6. Units of Length Converting Measurements
Kilometres
(km)
metres
(m)
centimetres
(cm)
millimetres
(mm)
20-Sep-18
Created by Mr. Lafferty Maths Dept.

7. Units of Length Converting Measurements
Examples
Convert 2m to cm :
2 x 100 = 200 cm
Convert 4km to m :
4 x 1000 = 4000 m
Convert 34cm to mm :
34 x 10 = 340 mm
Convert 50cm to m :
50 ÷ 100 = 0.5 m
20-Sep-18
Created by Mr. Lafferty Maths Dept.

8. Created by Mr. Lafferty Maths Dept.
Units of Length
A joiner needs a length of wood 173cm long.
He only has a length of wood 2m long.
How many centimetres will he need to cut off the 2m length ?
2m = 200cm
2 7
20-Sep-18
Created by Mr. Lafferty Maths Dept.

9. Created by Mr. Lafferty Maths Dept.
Length
Now try TJ2b
Q1 to Q5
Ch13 (page 127)
20-Sep-18
Created by Mr. Lafferty Maths Dept.

10. Created by Mr. Lafferty Maths Dept.
Starter Questions
Q1. True or false 2.3 x 8 = 18.4
Q2. Convert 5.4km to m
Q3. Solve the equation 2c = 34
Q4. True or false x = 37
20-Sep-18
Created by Mr. Lafferty Maths Dept.

11. Created by Mr. Lafferty Maths Dept.
Perimeter
Learning Intention
Success Criteria
1. We are learning the term perimeter of a shape.
Understand the term perimeter of a shape.
2. Calculate the perimeter of a shape.
20-Sep-18
Created by Mr. Lafferty Maths Dept.

12. Created by Mr. Lafferty Maths Dept.
Perimeter
What is perimeter ?
Hint
answer is on the screen !
20-Sep-18
Created by Mr. Lafferty Maths Dept.

13. Created by Mr. Lafferty Maths Dept.
Perimeter
Perimeter
20-Sep-18
Created by Mr. Lafferty Maths Dept.

14. Perimeter Perimeter is the distance round the outside of a 2D shape
20-Sep-18
Created by Mr. Lafferty Maths Dept.

15. Created by Mr. Lafferty Maths Dept.
Perimeter
Problem
Below is a drawing of the school building. Calculate the perimeter.
4 m
9 m
8 m
x m
12 m
x = 12 – 9 =3 m
Perimeter =
= 40 m
20-Sep-18
Created by Mr. Lafferty Maths Dept.

16. Created by Mr. Lafferty Maths Dept.
Perimeter
Now try TJ2b
Q6 to Q8
Ch13 (page 127)
20-Sep-18
Created by Mr. Lafferty Maths Dept.

17. Created by Mr. Lafferty Maths Dept.
Starter Questions
Q1. 25% of 360
Q2. Convert 7.2km to m
Q3. Solve the equation 8a = 72
Q4. True or false x = 35
20-Sep-18
Created by Mr. Lafferty Maths Dept.

18. Created by Mr. Lafferty Maths Dept.
Area
Learning Intention
Success Criteria
1 We are revising area.
To understand the term area.
Be able to find the area of various shapes.
20-Sep-18
Created by Mr. Lafferty Maths Dept.

19. Created by Mr. Lafferty Maths Dept.
Area
The area of a shape is simply defined by :
“the amount of space a shape takes up.”
Think of a square measuring 1 cm by 1cm we say it is :
1cm
1cm2
( 1 square centimetre )
20-Sep-18
Created by Mr. Lafferty Maths Dept.

20. Created by Mr. Lafferty Maths Dept.
Calculate the area of the yellow shapes.
13 cm2
3 cm2
20-Sep-18
Created by Mr. Lafferty Maths Dept.

21. Created by Mr. Lafferty Maths Dept.
Area of a Rectangle
Example
Find the area of the rectangle opposite
B = 2cm
L = 9cm
Area = Length x Breadth
A = L x B
A = 9 x 2
A = 18 cm2
Demo
20-Sep-18
Created by Mr. Lafferty Maths Dept.

22. Created by Mr. Lafferty Maths Dept.
John wants to re-turf his lawn.
(a) Calculate the area he needs to cover in m2.
A = l x b
= 7 x 3
= 21m2
20-Sep-18
Created by Mr. Lafferty Maths Dept.

23. Created by Mr. Lafferty Maths Dept.
Given one roll of turf covers 3m2.
How many rolls will John need.
Calculate the total cost if one roll of turf costs £14.40.
7 rolls
14.40 x7
£100.80
20-Sep-18
Created by Mr. Lafferty Maths Dept.

24. Created by Mr. Lafferty Maths Dept.
Area of a Rectangle
Example
Find the breadth b of the rectangle.
b cm
A = 36cm2
A = l x b
9cm
36 = 9 x b
9b = 36
(÷9)
Remember units
b = 4 cm
20-Sep-18
Created by Mr. Lafferty Maths Dept.

25. Area of A Right-Angled Triangle
Calculate the area of this shape
12cm
6cm
Demo
20-Sep-18
Created by Mr. Lafferty Maths Dept.

26. Created by Mr. Lafferty Maths Dept.
Area
Now try TJ2b
Q9 to Q14
Ch13 (page 128)
20-Sep-18
Created by Mr. Lafferty Maths Dept.

27. Compiled by Mr. Lafferty Maths Dept.
Starter Questions
Q1. Write 67% as a fraction and then a decimal.
Q2. Find the perimeter of the rectangle. 9m 6m
Q3. Find the area the rectangle in Q2.
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

28. Compiled by Mr. Lafferty Maths Dept.
Volume
Learning Intention
Success Criteria
We are learning the
term volume.
Understand the term volume.
Be able volume in terms of capacity.
Answer to contain
appropriate units.
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

29. What is Volume ? Volume The amount of space a shape
takes up in 3D ( Dimensions)
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

30. Volume Put these everyday objects in order of volume. (smallest first)
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

31. Volume Put these everyday objects in order of volume. (smallest first)
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

32. Compiled by Mr. Lafferty Maths Dept.
Volume
Julie is making 36 cup cakes
for her friends.
4 cups of water
(a) How much flour is used ?
150g
250g of butter
3 eggs
(b) Julie bought half a dozen eggs.
What fraction did she use ?
50g of caster sugar
2 teaspoons of oil
(c) If she needs to make 72 cakes
How much butter will she need ?
150g of flour
500g
½ teaspoon of salt
On another day she only makes
12 cakes. How many eggs will she need ?
1 egg
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

33. Compiled by Mr. Lafferty Maths Dept.
Liquid Volume
Reading Scales
How much liquid in the jug ?
Count the number of small divisions
Litres 2
1 litre = 1000ml 5
Each division is worth 1
1 litre ÷ 5 =
1000ml ÷ 5 =
200ml
200ml x 4 = 800ml
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

34. Compiled by Mr. Lafferty Maths Dept.
Liquid Volume
How much liquid in the jug ?
Count the number of small divisions
Litres 2
1 litre = 1000ml 5
Each division is worth 1
1 litre ÷ 5 =
1000ml ÷ 5 =
200ml
200ml x 7 = 1400ml or 1.4 litres
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

35. Liquid Volume 1 litre = 1000ml Count the number of small divisions
How much liquid in the jug ?
( Careful different scale)
Count the number of small divisions
Litres 2
1 litre = 1000ml 4
Each division is worth 1
1 litre ÷ 4 =
1000ml ÷ 4 =
250ml
250ml x 7 = 1750ml or 1.75 litres
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

36. Compiled by Mr. Lafferty Maths Dept.
Volume
Now try TJ2b
Q15 to Q18
Ch13 (page 129)
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

37. Compiled by Mr. Lafferty Maths Dept.
Starter Questions
Q1. What is perimeter.
Q2. 25% of 120.
Q3. Write 45 litres in ml.
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

38. Volumes by Counting Cubes
Learning Intention
Success Criteria
We are revising volume.
Understand the term volume.
Calculate volume for various shapes.
Answer to contain
appropriate units.
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

39. Volumes by Counting Cubes
Volume is the amount of space a 3D - shape takes up
1cm
1cm
1cm
One Unit of Volume is the “CUBIC CENTIMETRE”
= 1 centimetre cube
= 1 cm³
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

40. What is its volume in cm³ of these shapes.
Volumes by Counting Cubes
What is its volume in cm³ of these shapes.
5 cm3
5 cm3
6 cm3
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

41. Conversion Millilitres to Litres
1000ml = 1 litre
Conversion Millilitres to Litres
x 1000
Litres
(l)
millilitres
(ml)
÷ 1000
raindrop
20-Sep-18
Created by Mr. Lafferty Maths Dept.

42. Conversion Millilitres to Litres
1000ml = 1 litre
Conversion Millilitres to Litres
Convert the following to millilitres
(a) 1.1 litres (b) 3.7 litres (c) litres
1100 ml
3700 ml
850 ml
Convert the following to millilitres
(a) ml (b) 6100 ml (c) 450 ml
2.5 litres
6.1 litres
0.45 litres
20-Sep-18
Created by Mr. Lafferty Maths Dept.

43. Compiled by Mr. Lafferty Maths Dept.
A short cut !
3cm
4cm
6cm
height
Area of rectangle
breadth
length
Volume = 6
x 3
x 4
= 72 cm³
Volume =
length
x breadth
x height
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

44. Compiled by Mr. Lafferty Maths Dept.
Working
Volume = l x b x h
Heilander’s
Porridge Oats
V = 18 x 5 x 27
V = cm³
27cm
5 cm
18 cm
Demo
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

45. Compiled by Mr. Lafferty Maths Dept.
Working
Volume = l x b x h
V = 2 x 2 x 2
V = 8 cm³
2cm
Demo
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

46. Compiled by Mr. Lafferty Maths Dept.
Volume
Now try TJ2b
Q19 to Q21
Ch13 (page 129)
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

47. Compiled by Mr. Lafferty Maths Dept.
Starter Questions
Q1. Write 67% as a fraction and then a decimal.
Q2. Find the perimeter of the rectangle. 9m 6m
Q3. Find the area the rectangle in Q2.
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

48. Compiled by Mr. Lafferty Maths Dept.
Weight
Learning Intention
Success Criteria
We are revising Weight.
Understand the term Weight.
Be able to convert grams to kilograms and vice versa.
Answer with appropriate units.
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

49. Weight
A cubic with volume 1 cm3 filled with water weighs 1g
Light weight
measured in grams (g)
1 cm
Weight = 1g
Heavy weight
measured in kilograms (kg)
1 cm
1 cm
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

50. Weight 1000g = 1kg Put these everyday objects in order of Weight.
(smallest first)
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

51. Created by Mr. Lafferty Maths Dept.
1000g = 1 kg
Grams & Kilograms
Convert the following to grams only
(a) 23 kg (b) 3 kg 560g (c) ¼ kg
2300g
3560g
250g
Convert the following to kg or kg and grams
(a) 7750g (b) 22100g (c) ml
7kg 750g
22kg 100g
1kg 50g
20-Sep-18
Created by Mr. Lafferty Maths Dept.

52. Weight & Scales Count the number of small divisions 100g 200g 300g
Reading Scales
Calculate the weight each arrow is pointing at?
120g
Count the number of small divisions
100g 5
200g
Each division is worth
300g
100 ÷ 5 =
20g
280g
400g
500g
540g
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

53. Weight & Scales Count the number of small divisions 200g 400g 600g
Reading Scales
Calculate the weight each arrow is pointing at?
200g
400g
600g
800g
1kg
80g
Count the number of small divisions 5
Each division is worth
200 ÷ 5 =
40g
720g
1kg 20g
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

54. Compiled by Mr. Lafferty Maths Dept.
Weight
Frances bought three and half kilograms of apples
to make two apple pies. 650g were not used.
(a) Write the weight of apples bought in grams.
3500g
(b) How many grams were actually used in the pies. g
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

55. Compiled by Mr. Lafferty Maths Dept.
Weight
Three identical jars of sweets weigh 4kg 200g.
4200g
(a) Write the weight in grams.
(b) How many grams does 1 jar weigh. g
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.

56. Grams & Kilograms Now try TJ2b Q22 to Q29 Ch13 (page 130)
Have you updated your Learning Log ?
Grams & Kilograms
Now try TJ2b
Q22 to Q29
Ch13 (page 130)
20-Sep-18
Compiled by Mr. Lafferty Maths Dept.