1. Created by Mr. Lafferty Maths Dept.
Whole Numbers
MNU 2-02a
MNU 2-03a
Place Value
Scales
Addition and Subtraction
Multiplying & Dividing by 10,100,1000
Multiplying by a Single Digit
Dividing by a Single Digit
Multiplying & Dividing by 20, 300 etc..
Rounding to nearest 10,100,1000
Estimating Answers
5-Apr-17
Created by Mr. Lafferty Maths Dept.

2. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
34o
5-Apr-17
Created by Mr. Lafferty Maths Dept.

3. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
MNU 2-02a
MNU 2-03a
Learning Intention
Success Criteria
1. We are learning the value of a digit given its place in a numbers.
Understand the value of a digit given it place in a number.
2. Be able solve simply problems involving place value.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

4. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
MNU 2-02a
MNU 2-03a
5-Apr-17
Created by Mr. Lafferty Maths Dept.

5. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
MNU 2-02a
MNU 2-03a
Place Value Sheet
5-Apr-17
Created by Mr. Lafferty Maths Dept.

6. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
MNU 2-02a
MNU 2-03a
Now try
Exercise XX
Ch1 (page XX)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

7. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
5-Apr-17
Created by Mr. Lafferty Maths Dept.

8. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Reading Scales
MNU 2-02a
MNU 2-03a
Learning Intention
Success Criteria
1. We are learning the value of a digit given its place in a numbers.
Understand the value of a digit given it place in a number.
2. Be able solve simply problems involving place value.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

9. Compiled by Mr. Lafferty Maths Dept.
Liquid Volume S4
Reading Scales
How much liquid in the jug ?
Count the number of small divisions
Litres 2
1litre = 1000ml 5
Each division is worth 1
1 litre ÷ 5 =
1000ml ÷ 5 =
200ml
200ml x 4 = 800ml
5-Apr-17
Compiled by Mr. Lafferty Maths Dept.

10. Compiled by Mr. Lafferty Maths Dept.
Liquid Volume S4
Reading Scales
How much liquid in the jug ?
Count the number of small divisions
Litres 2
1litre = 1000ml 5
Each division is worth 1
1 litre ÷ 5 =
1000ml ÷ 5 =
200ml
200ml x 7 = 1400ml or 1.4 litres
5-Apr-17
Compiled by Mr. Lafferty Maths Dept.

11. Liquid Volume Reading Scales How much liquid in the jug ? 2
( Careful different scale)
Count the number of small divisions
Litres 2
1litre = 1000ml 4
Each division is worth 1
1 litre ÷ 4 =
1000ml ÷ 4 =
250ml
250ml x 7 = 1750ml or 1.75 litres
5-Apr-17
Compiled by Mr. Lafferty Maths Dept.

12. Weight & Scales 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
5-Apr-17
Compiled by Mr. Lafferty Maths Dept.

13. Weight & Scales 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
5-Apr-17
Compiled by Mr. Lafferty Maths Dept.

14. Reading different scales
Whole Numbers
Reading Scales
MNU 2-02a
MNU 2-03a
Reading Weights
Reading different scales
Scale Sheet
5-Apr-17
Created by Mr. Lafferty Maths Dept.

15. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Reading Scales
MNU 2-02a
MNU 2-03a
Now try
Exercise XX
Ch1 (page XX)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

16. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
5-Apr-17
Created by Mr. Lafferty Maths Dept.

17. Whole Numbers www.mathsrevision.com Addition and Subtraction
MNU 2-02a
MNU 2-03a
Learning Intention
Success Criteria
1. We are learning the importance of layout when doing addition and subtraction.
Using and understanding layout for addition and subtraction.
2. Be able to solve simple problems involving addition and subtraction.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

18. Are there any errors in these sums.
Whole Numbers
Addition and Subtraction
MNU 2-02a
MNU 2-03a
There are many reasons why pupils do not get
the correct answer to addition and subtraction sums. 23 +9 23 9
23 + 9 54 -8 8
-54
54 - 8
5-Apr-17
Created by Mr. Lafferty Maths Dept.

19. Whole Numbers Proper layout www.mathsrevision.com
Addition and Subtraction
MNU 2-02a
MNU 2-03a
Proper layout
5-Apr-17
Created by Mr. Lafferty Maths Dept.

20. Whole Numbers Now try Exercise XX Ch1 (page xx) www.mathsrevision.com
Addition and Subtraction
MNU 2-02a
MNU 2-03a
Now try
Exercise XX
Ch1 (page xx)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

21. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
Make up your own
addition subtraction
5-Apr-17
Created by Mr. Lafferty Maths Dept.

22. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply by 10, 100, 1000
MNU 2-02a
MNU 2-03a
Learning Intention
Success Criteria
1 We are learning how to multiply and divide simple whole numbers by 10, 100, 1000.
Understand the simple rules to multiply and divide simple whole numbers.
2. Be able do simple calculations.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

23. Whole Numbers www.mathsrevision.com Multiply by 10, 100, 1000
MNU 2-02a
MNU 2-03a
For this section you need to know your tables
To multiply by 10, 100, 1000
To multiply by 10 simply add a zero to the number
To multiply by 100 simply add 2 zero’s to the number
To multiply by 1000 simply add 3 zero’s to the number
Example : Multiply 36 by 10, 100, 1000.
Guess rule for 1000
36 x 10 =
360
36 x 100 =
3600
36 x 1000 =
36000
5-Apr-17
Created by Mr. Lafferty Maths Dept.

24. Whole Numbers www.mathsrevision.com Multiply by 10, 100, 1000
MNU 2-02a
MNU 2-03a
Example : A box of crisps contain 48 packets.
How many in 100 boxes ?
48 x 100 =
4800
5-Apr-17
Created by Mr. Lafferty Maths Dept.

25. Whole Numbers www.mathsrevision.com Divide by 10, 100, 1000
MNU 2-02a
MNU 2-03a
Try and write down rule for 100, 1000
To Divide by 10, 100, 1000
To divide by 10 remove a zero from the number
To divide by 100 remove 2 zero’s from the number
To divide by 1000 remove 3 zero’s from the number
Example : Divide by 10, 100, 1000.
54000÷ 10 =
5400
54000 ÷ 100 =
540
54000 ÷ 1000 = 54
5-Apr-17
Created by Mr. Lafferty Maths Dept.

26. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Divide by 10, 100, 1000
MNU 2-02a
MNU 2-03a
Example : A box contains 1000 cups. How many boxes are needed to hold 7000 ?
7000 ÷ 1000 = 7
5-Apr-17
Created by Mr. Lafferty Maths Dept.

27. Units of Length Converting Measurements
Kilometres
(km)
metres
(m)
centimetres
(cm)
millimetres
(mm)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

28. 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
5-Apr-17
Created by Mr. Lafferty Maths Dept.

29. Compiled by Mr. Lafferty Maths Dept.
Weight & Scales S4
Kilograms
x 1000
grams
2kg
2 x 1000
2000g
1.5kg
1.5 x 1000
1500g
÷ 1000
Kilograms
grams
3000g
3000 ÷ 1000
3kg
1500g
1500 ÷ 1000
1.5kg
5-Apr-17
Compiled by Mr. Lafferty Maths Dept.

30. Created by Mr. Lafferty Maths Dept.
Converting Weights
Examples
Convert 4 kg to g :
4 x 1000 = 4000 g
Convert 9 kg to g :
9 x 1000 = 9000 g
Convert 2000 g to kg :
2000 ÷ 1000 = 2 kg
Convert 5000 g to kg :
5000 ÷ 1000 = 5 kg
5-Apr-17
Created by Mr. Lafferty Maths Dept.

31. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply & Divide by 10, 100, 1000
MNU 2-02a
MNU 2-03a
Now try
Exercise 3 & 4
Ch1 (page 13)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

32. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
34o
5-Apr-17
Created by Mr. Lafferty Maths Dept.

33. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiplying by a single number
MNU 2-02a
MNU 2-03a
Learning Intention
Success Criteria
1 We are learning how to do multiply by a single digit.
Remember your tables.
2. Apply appropriate layout and working for multiplying by a single digit.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

34. Whole Numbers 23 x 9 23 9 23 x 9 Are there any errors in these sums.
Addition and Subtraction
MNU 2-02a
MNU 2-03a
There are many reasons why pupils do not get
the correct answer to multiplication sums. 23
x 9 23 9
23 x 9
5-Apr-17
Created by Mr. Lafferty Maths Dept.

35. Whole Numbers www.mathsrevision.com Multiplying by a single number
MNU 2-02a
MNU 2-03a
To be able to multiply by a single digit you need to
know your tables.
Examples
5-Apr-17
Created by Mr. Lafferty Maths Dept.

36. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiplying by a single number
MNU 2-02a
MNU 2-03a
Example : A palette holds 164 tins of paint.
How many tins in 8 palettes.
164 x8
1312 53
5-Apr-17
Created by Mr. Lafferty Maths Dept.

37. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiplying by a single number
MNU 2-02a
MNU 2-03a
Now try Exercise 5
Ch1 (page 15)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

38. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
123o
5-Apr-17
Created by Mr. Lafferty Maths Dept.

39. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Dividing by a single number
MNU 2-02a
MNU 2-03a
Learning Intention
Success Criteria
1 We are learning how to do divide by a single digit.
1. Apply appropriate layout and working for dividing by a single digit.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

40. Whole Numbers 586 ÷ 9 Are there any errors in these sums.
Addition and Subtraction
MNU 2-02a
MNU 2-03a
There are many reasons why pupils do not get
the correct answer to division sums.
586 ÷ 9
5-Apr-17
Created by Mr. Lafferty Maths Dept.

41. Whole Numbers Examples : 732 ÷ 8 950 ÷ 5 www.mathsrevision.com
Dividing by a single number
MNU 2-02a
MNU 2-03a
Use the following layout for dividing by a single digit.
Examples : 732 ÷ ÷ 5
5-Apr-17
Created by Mr. Lafferty Maths Dept.

42. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Dividing by a single number
MNU 2-02a
MNU 2-03a
Example : A carton can hold 6 eggs.
How many cartons are needed
for 5436 eggs.
906
5436 6
5-Apr-17
Created by Mr. Lafferty Maths Dept.

43. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Dividing by a single number
MNU 2-02a
MNU 2-03a
Example : Copy and complete.
544
1853
1239
3808 7
9265 5
7434 6
652
952
2336
5216 8
3808 4
7008 3
5-Apr-17
Created by Mr. Lafferty Maths Dept.

44. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Dividing by a single number
MNU 2-02a
MNU 2-03a
Now try Exercise 7
Ch1 (page 17)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

45. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
36o
5-Apr-17
Created by Mr. Lafferty Maths Dept.

46. Created by Mr. Lafferty Maths Dept.
Whole Numbers
MNU 2-02a
MNU 2-03a
Multiply or Divide by 20,300,4000
Learning Intention
Success Criteria
1. Understand the two step process to multiply or divide by 20, 300 etc…
1 We are learning how to divide by 20, 300, 4000 etc using our knowledge so far.
2. Show all working.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

47. Whole Numbers www.mathsrevision.com
Multiply or Divide by 20,300,4000
MNU 2-02a
MNU 2-03a
By combining our knowledge so far of
“multiplying / dividing by 10, 100, 1000”
and
“multiplying / dividing by a single digit”
we can do harder calculations.
We use a TWO step process.
Example 1 : Calculate 20 x 52
20 can be written as 2 x 10 so we have :
2 x 10 x 52 =
Step 1 : 10 x 52 =
520
Step 2 : 2 x 520 =
1040
5-Apr-17
Created by Mr. Lafferty Maths Dept.

48. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply or Divide by 20,300,4000
MNU 2-02a
MNU 2-03a
Example 2 : Calculate 44 x 30
30 can be written as 10 x 3 so we have :
44 x 10 x 3 =
Step 1 : 44 x 10 =
440
Step 2 : 440 x 3 =
1320
Example 3 : Calculate 300 x 35
300 can be written as 3 x 100 so we have :
3 x 100 x 35 =
Step 1 : 100 x35 =
3500
Step 2 : 3500 x 3 =
10500
5-Apr-17
Created by Mr. Lafferty Maths Dept.

49. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply or Divide by 20,300,4000
MNU 2-02a
MNU 2-03a
Example 4 : Calculate ÷ 200
Since 200 divide by 100 then divide by 2:
16000 ÷ 100 ÷ 2 =
160
Step 1 : ÷ 100 = 80
Step 2 : 160 ÷ 2 =
5-Apr-17
Created by Mr. Lafferty Maths Dept.

50. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply or Divide by 20,300,4000
MNU 2-02a
MNU 2-03a
Example 5 : Calculate ÷ 6000
Since 6000 divide by 1000 then divide by 6:
÷ 1000 ÷ 6 =
120
Step 1 : ÷ = 20
Step 2 : 120 ÷ 6 =
5-Apr-17
Created by Mr. Lafferty Maths Dept.

51. Created by Mr. Lafferty Maths Dept.
Whole Numbers
MNU 2-02a
MNU 2-03a
Multiply or Divide by 20,300,4000
Now try Exercise 8
Ch41 (page 19)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

52. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
28o
5-Apr-17
Created by Mr. Lafferty Maths Dept.

53. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Rounding to nearest 10, 100 and 1000
MNU 2-02a
MNU 2-03a
Learning Intention
Success Criteria
1. Understand the rules for rounding to the nearest 10, 100, 1000.
1. We are learning to round numbers to the nearest 10, 100 and 1000.
2. Apply rules to problems.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

54. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Rounding to nearest 10, 100 and 1000
MNU 2-02a
MNU 2-03a
To round to the nearest 10 : look at the units digit:
- If it is a 0, 1, 2, 3, 4 leave the 10’s digit as it is.
- If it is a 5, 6, 7, 8, 9 round the 10’s digit up by 1.
To round to the nearest 100 : look at the tens digit:
- If it is a 0, 1, 2, 3, 4 leave the 100’s digit as it is.
- If it is a 5, 6, 7, 8, 9 round the 100’s digit up by 1.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

55. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Rounding to nearest 10, 100 and 1000
MNU 2-02a
MNU 2-03a
To round to the nearest 1000 : look at the hundreds digit:
- If it is a 0, 1, 2, 3, 4 leave the 1000’s digit as it is.
- If it is a 5, 6, 7, 8, 9 round the 1000’s digit up by 1.
Example : Round 3467 to the nearest 10, 100, 1000
The nearest 10 : 3467
3470
- look at the units digit :
The nearest 100 : 3467
3500
- look at the tens digit :
The nearest 1000 :3467
3000
- look at the hundreds digit:
5-Apr-17
Created by Mr. Lafferty Maths Dept.

56. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Rounding to nearest 10, 100 and 1000
MNU 2-02a
MNU 2-03a
Example : Round to the nearest 10, 100, 1000
The nearest 10 :
- look at the units digit :
18 570
The nearest 100 :
- look at the tens digit :
18 600
The nearest 1000 :18565
- look at the hundreds digit:
19 000
5-Apr-17
Created by Mr. Lafferty Maths Dept.

57. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Rounding to nearest 10, 100 and 1000
MNU 2-02a
MNU 2-03a
Now try Exercise 9
Ch1 (page 21)
5-Apr-17
Created by Mr. Lafferty Maths Dept.

58. Created by Mr. Lafferty Maths Dept.
Starter Questions
MNU 2-02a
MNU 2-03a
42o
5-Apr-17
Created by Mr. Lafferty Maths Dept.

59. Created by Mr. Lafferty Maths Dept.
Whole Numbers
MNU 2-02a
MNU 2-03a
Using Rounding to Estimate Answers
Learning Intention
Success Criteria
1. Remember how to round numbers to a whole number.
1. We are learning how estimate answer by rounding.
2. Estimate the answer to a difficult calculation using easier whole numbers.
5-Apr-17
Created by Mr. Lafferty Maths Dept.

60. Whole Numbers www.mathsrevision.com 40 x 50 = 400 x 5 = 2000
MNU 2-02a
MNU 2-03a
Using Rounding to Estimate Answers
It is very important when solving problems that we have
a rough idea of the answer we are expecting.
Example : Mentally estimate the answer to 42 x 49
Easiest way, is to round the two numbers first
40 x 50 =
400 x 5 =
2000
5-Apr-17
Created by Mr. Lafferty Maths Dept.

61. Created by Mr. Lafferty Maths Dept.
Whole Numbers
MNU 2-02a
MNU 2-03a
Using Rounding to Estimate Answers
Example : Mentally estimate the answer to 104 x 19
Easiest way, is to round the two numbers first
100 x 20 =
1000 x 2 =
2000
Example : Mentally estimate the answer to 878 ÷ 27
Easiest way, is to round the two numbers first
900 ÷ 30 =
90 ÷ 3 = 30
5-Apr-17
Created by Mr. Lafferty Maths Dept.

62. Created by Mr. Lafferty Maths Dept.
Whole Numbers
MNU 2-02a
MNU 2-03a
Using Rounding to Estimate Answers
Now try Exercise 10
Ch1 (page 22)
5-Apr-17
Created by Mr. Lafferty Maths Dept.