1. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
Multiplying / Dividing by 20, 50 , 3000
Rounding to 10, 100 and 1000
Rounding and Estimating
Using a Calculator
BODMAS
2-Feb-18
Created by Mr. Lafferty Maths Dept.

2. Created by Mr. Lafferty Maths Dept.
Starter Questions
34o
2-Feb-18
Created by Mr. Lafferty Maths Dept.

3. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
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.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

4. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
2-Feb-18
Created by Mr. Lafferty Maths Dept.

5. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
Write down the following
numbers fully in words
400678
(c)
Three million and seven
Four hundred thousand six hundred and seventy-eight
One hundred and twenty-four thousand and eighty-seven
2-Feb-18
Created by Mr. Lafferty Maths Dept.

6. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
Write down the following
numbers using digits
Four million and fifty
Eight hundred thousand and four
(c) Two hundred and forty thousand and nine
800004
2-Feb-18
Created by Mr. Lafferty Maths Dept.

7. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
Write down the following numbers in order of size
smallest first.
605 , 5106 , 4198 , 4921 , 516 , 506
506 ,
516 ,
605 ,
4198 ,
4921 ,
5106
2-Feb-18
Created by Mr. Lafferty Maths Dept.

8. Weight & Scales Reading Scales
Calculate the weight each arrow is pointing at?
12000g
Count the number of small divisions
10000g 5
20000g
Each division is worth
30000g
10000 ÷ 5 =
2000g
28000g
40000g
50000g
54000g
2-Feb-18
Compiled by Mr. Lafferty Maths Dept.

9. Weight & Scales Reading Scales
Calculate the weight each arrow is pointing at?
20000g
40000g
60000g
80000g
100000g
8000g
Count the number of small divisions 5
Each division is worth
20000 ÷ 5 =
4000g
72000g
104000g
2-Feb-18
Compiled by Mr. Lafferty Maths Dept.

10. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Place Value
Place Value Sheet
2-Feb-18
Created by Mr. Lafferty Maths Dept.

11. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Now try TJ2b
Ex 1
Ch1 (page 3)
2-Feb-18
Created by Mr. Lafferty Maths Dept.

12. Created by Mr. Lafferty Maths Dept.
Starter Questions
28o
2-Feb-18
Created by Mr. Lafferty Maths Dept.

13. Created by Mr. Lafferty Maths Dept.
Whole Numbers
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 multiply / divide by 20, 300, 4000 etc using our knowledge so far.
2. Show all working.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

14. Whole Numbers www.mathsrevision.com Multiply by 10, 100, 1000
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
2-Feb-18
Created by Mr. Lafferty Maths Dept.

15. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply by 10, 100, 1000
Ex : A box of crisps contain 48 packets.
How many in 100 boxes ?
2-Feb-18
Created by Mr. Lafferty Maths Dept.

16. Whole Numbers www.mathsrevision.com Divide by 10, 100, 1000
Try and write down rule for 100, 1000
Divide by 10, 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
2-Feb-18
Created by Mr. Lafferty Maths Dept.

17. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Divide by 10, 100, 1000
Ex : A box contains 1000 cups.
How many boxes are needed to hold 7000 ? 7
2-Feb-18
Created by Mr. Lafferty Maths Dept.

18. Whole Numbers www.mathsrevision.com 1 0 4 0
Multiply or Divide by 20,300,4000
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 : 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 =
2-Feb-18
Created by Mr. Lafferty Maths Dept.

19. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply or Divide by 20, 300, 4000
Example : 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 =
Example : Calculate 300 x 26
300 can be written as 3 x 100 so we have :
3 x 100 x 26 =
Step 1 : 100 x 26 =
2600
Step 2 : 2600 x 3 =
2-Feb-18
Created by Mr. Lafferty Maths Dept.

20. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply or Divide by 20,300,4000
Example : Calculate ÷ 200
Since 200 divide by 100 then divide by 2:
16000 ÷ 100 ÷ 2
160
Step 1 : ÷ 100 =
8 0
Step 2 :
2-Feb-18
Created by Mr. Lafferty Maths Dept.

21. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply or Divide by 20,300,4000
Example : Calculate ÷ 6000
Since 6000 divide by 1000 then divide by 6:
÷ 1000 ÷ 6
120
Step 1 : ÷ =
2 0
Step 2 :
2-Feb-18
Created by Mr. Lafferty Maths Dept.

22. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Multiply or Divide by 20,300,4000
Now try TJ2b
Ex 2
Ch1 (page 5)
Are you on Target ?
I can ?
2-Feb-18
Created by Mr. Lafferty Maths Dept.

23. Created by Mr. Lafferty Maths Dept.
Starter Questions
2-Feb-18
Created by Mr. Lafferty Maths Dept.

24. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Learning Intention
Success Criteria
1. Understand the rules for rounding to the nearest 10, 100 and 1000.
1. We are learning to round numbers to the nearest 10, 100 and 1000.
2. Apply rules to problems.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

25. Created by Mr. Lafferty Maths Dept.
Whole Numbers
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.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

26. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Example : Round to the nearest 10 and 100.
The nearest 10 : 8 565
- look at the units digit :
8 570
The nearest 100 : 8 565
- look at the tens digit :
8 600
2-Feb-18
Created by Mr. Lafferty Maths Dept.

27. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Now try TJ2b
Ex 3
Ch1 (page 7)
2-Feb-18
Created by Mr. Lafferty Maths Dept.

28. Created by Mr. Lafferty Maths Dept.
Starter Questions
42o
2-Feb-18
Created by Mr. Lafferty Maths Dept.

29. Created by Mr. Lafferty Maths Dept.
Estimating
Using Sig. Fig. to Estimate Answers
Learning Intention
Success Criteria
1. We are learning how to estimate an answer using significant figures.
2. Estimate the answer to a calculation using significant figures.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

30. Estimating www.mathsrevision.com 40 x 50 = 400 x 5 = 2000
Using Sig. Fig. 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
by rounding each number to 1 sig. fig. first.
40 x 50
= 400 x 5
= 2000
2-Feb-18
Created by Mr. Lafferty Maths Dept.

31. Created by Mr. Lafferty Maths Dept.
Estimating
Using Sig. Fig. to Estimate Answers
Example : Mentally estimate the answer to 104 x 19
by rounding each number to 1 sig. fig. first.
100 x 20
= 1000 x 2
= 2000
Example : Mentally estimate the answer to 878 ÷ 27
by rounding each number to 1 sig. fig. first.
900 ÷ 30
= 90 ÷ 3
= 30
2-Feb-18
Created by Mr. Lafferty Maths Dept.

32. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Now try TJ2b
Ex 4
Ch1 (page 8)
2-Feb-18
Created by Mr. Lafferty Maths Dept.

33. Created by Mr. Lafferty Maths Dept.
Starter Questions
Q ÷ 1000
Q – 35
Q3. Find the missing angle
120o
2-Feb-18
Created by Mr. Lafferty Maths Dept.

34. Created by Mr. Lafferty Maths Dept.
Using a Calculator
Learning Intention
Success Criteria
1. Be able to use a scientific calculator with confidence.
1 We are learning to use a scientific calculator.
2. Use calculator to evaluate complicated calculations.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

35. Created by Mr. Lafferty Maths Dept.
Using a Calculator
We should by now ALL have the FX83 calculator.
We will use it to do more
complicated calculations.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

36. Created by Mr. Lafferty Maths Dept.
Using a Calculator
Josh won £1.2 million on the lottery
He spent £ on a fancy car.
How much does he have left ? –
= £
2-Feb-18
Created by Mr. Lafferty Maths Dept.

37. Created by Mr. Lafferty Maths Dept.
Using a Calculator
Celtic are expect fans to go
to the cup final in Lisbon.
A plane can hold 380 people.
How many planes are needed ?
10000 – 380
27 planes
= 26.3
2-Feb-18
Created by Mr. Lafferty Maths Dept.

38. Using a Calculator www.mathsrevision.com 32 x 2 x 12 = £768
Maria pays £32 every time she goes to the fitness suite.
She goes twice a month.
Her budget for the year is £700.
Does she go over her budget ?
32 x 2 x 12
She goes over budget by £68
= £768
2-Feb-18
Created by Mr. Lafferty Maths Dept.

39. Created by Mr. Lafferty Maths Dept.
Whole Numbers
Now try TJ2b
Ex 5
Ch1 (page 9)
2-Feb-18
Created by Mr. Lafferty Maths Dept.

40. Created by Mr. Lafferty Maths Dept.
Starter Questions
Q x 1000
Q x 4
Q3. Find the missing angle
58o
2-Feb-18
Created by Mr. Lafferty Maths Dept.

41. Created by Mr. Lafferty Maths Dept.
BODMAS
Learning Intention
Success Criteria
1. Understand the order of calculations.
1 We are learning the order of calculations using BODMAS.
2. Use BODMAS to evaluate complicated calculations.
2-Feb-18
Created by Mr. Lafferty Maths Dept.

42. BODMAS B - O - D - M - A - S - Brackets x and ÷ Other Division
Calculations MUST BE done in a certain order.
We can use BODMAS to help us remember the order.
B -
O -
D -
M -
A -
S -
Brackets
x and ÷
same priority
Other
Division
Multiplication
+ and -
same priority
Addition
Subtraction
2-Feb-18
Created by Mr. Lafferty Maths Dept.

43. Created by Mr. Lafferty Maths Dept.
BODMAS
200 – 25 x 2
9 – half of
= 9 – 5 + 2
= 200 – 50
= 4 + 2
= 150
= 6
2-Feb-18
Created by Mr. Lafferty Maths Dept.

44. Created by Mr. Lafferty Maths Dept.
BODMAS
80 ÷ (8 – 3)
4 x ( ) + 10
= 80 ÷ 5
= 4 x
= 16 =
= 250
2-Feb-18
Created by Mr. Lafferty Maths Dept.

45. BODMAS Now try TJ2b Ex 6 Ch1 (page 11) www.mathsrevision.com
Have you updated your Learning Log ?
BODMAS
Now try TJ2b
Ex 6
Ch1 (page 11)
Are you on Target ?
I can ?
Mind Map
2-Feb-18
Created by Mr. Lafferty Maths Dept.