1. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Multiplying by 10, 100, 1000
Dividing by 10, 100, 1000
Multiplying by a single Digit
Dividing by a single Digit
Mixed Questions
29-May-18
Created by Mr. Lafferty Maths Dept.

2. Created by Mr. Lafferty Maths Dept.
Starter Questions
40o
29-May-18
Created by Mr. Lafferty Maths Dept.

3. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Learning Intention
Success Criteria
1 We are learning how to multiply decimal numbers by 10, 100, 1000.
Understand the simple rules to multiply decimal numbers.
2. Be able do calculations.
29-May-18
Created by Mr. Lafferty Maths Dept.

4. Decimal Numbers www.mathsrevision.com Multiplying by 10, 100, 1000
To multiply a decimal number by 10,
Simply move point 1 place to the right:
e.g x 10 = point is moved 1 place to right
To multiply a decimal number by 100,
Simply move point 2 places to the right:
e.g x 100 = 102 point is moved 2 places to right
29-May-18
Created by Mr. Lafferty Maths Dept.

5. Decimal Numbers www.mathsrevision.com Multiplying by 10, 100, 1000
To multiply a decimal number by 1000,
Simply move point 3 places to the right:
e.g x 1000 =
point is moved 3 place to right
29-May-18
Created by Mr. Lafferty Maths Dept.

6. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Multiplying by 10, 100, 1000
Example : Multiply by 10, 100, 1000
10 x =
18.574
100 x =
185.74
1000 x =
1857.4
29-May-18
Created by Mr. Lafferty Maths Dept.

7. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Now try TJ2a
Ex 1
Ch7 (page 62)
29-May-18
Created by Mr. Lafferty Maths Dept.

8. Created by Mr. Lafferty Maths Dept.
Starter Questions
29-May-18
Created by Mr. Lafferty Maths Dept.

9. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Learning Intention
Success Criteria
1 We are learning how to divide decimal numbers by 10, 100, 1000.
Understand the simple rules to divide decimal numbers.
2. Be able do calculations.
29-May-18
Created by Mr. Lafferty Maths Dept.

10. Decimal Numbers www.mathsrevision.com Dividing by 10, 100, 1000
To divide a decimal number by 10,
Simply move point 1 place to the left:
e.g. 89 ÷ 10 = 8.9 point is moved 1 place to left
To divide a decimal number by 100,
Simply move point 2 places to the left:
e.g ÷ 100 = point is moved 2 places to left
29-May-18
Created by Mr. Lafferty Maths Dept.

11. Decimal Numbers www.mathsrevision.com Dividing by 10, 100, 1000
To divide a decimal number by 1000,
Simply move point 3 places to the left:
e.g ÷ 1000 =
point is moved 3 places to the left
29-May-18
Created by Mr. Lafferty Maths Dept.

12. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Dividing by 10, 100, 1000
Example : Divide by 10, 100, 1000
÷ 10 =
4502.4
÷ 100 =
450.24
÷ 1000 =
45.024
29-May-18
Created by Mr. Lafferty Maths Dept.

13. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Now try TJ2a
Ex 2
Ch7 (page 63)
29-May-18
Created by Mr. Lafferty Maths Dept.

14. Created by Mr. Lafferty Maths Dept.
Starter Questions
57o
29-May-18
Created by Mr. Lafferty Maths Dept.

15. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Learning Intention
Success Criteria
1. Understand how to multiply a decimal number by a single Digit.
1. We are learning how to multiply a decimal number by a single Digit.
2. Show appropriate working.
29-May-18
Created by Mr. Lafferty Maths Dept.

16. Decimal Numbers www.mathsrevision.com 1 6 5 . 7 6
When multiplying by a single digit
the decimal point always stays in line.
Example : Calculate x 7
29-May-18
Created by Mr. Lafferty Maths Dept.

17. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Multiplication & Division by a Single Digit
Example : Copy and complete.
3.5 x 6
18.43 x 4
76.97 x 6
29-May-18
Created by Mr. Lafferty Maths Dept.

18. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Now try TJ2a
Ex 3
Ch7 (page 64)
29-May-18
Created by Mr. Lafferty Maths Dept.

19. Created by Mr. Lafferty Maths Dept.
Starter Questions
29-May-18
Created by Mr. Lafferty Maths Dept.

20. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Learning Intention
Success Criteria
1. Understand how to divide a decimal number by a single Digit.
1. We are learning how to divide a decimal number by a single Digit.
2. Show appropriate working.
29-May-18
Created by Mr. Lafferty Maths Dept.

21. Decimal Numbers Example : Calculate 17.16 ÷ 6 2 . 8 6
When dividing by a single digit
the decimal point always stays in line.
Example : Calculate ÷ 6
29-May-18
Created by Mr. Lafferty Maths Dept.

22. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Multiplication & Division by a Single Digit
Example : Copy and complete.
6.52 ÷ 2
95.05 ÷ 5
÷ 6
29-May-18
Created by Mr. Lafferty Maths Dept.

23. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Now try TJ2a
Ex 4
Ch7 (page 65)
29-May-18
Created by Mr. Lafferty Maths Dept.

24. . moves to the left . moves to the RIGHT 3.7 + - 4 6 . 1 9 0 . 3 3 1
8 . 5
5 . 4 3 1
. 2 3 5 x 9
2 . 1 6 4 6
8 . 2 6
. 5 2
3 . 8
3 1 6
. 8 1 4 1
. moves to the left
number gets smaller
Look at 2nd
decimal place
Decimal Number
Layout IMPORTANT
10, 100 , 1000
Rounding
10, 100 , 1000
39 ÷ 10
to 1 decimal place
. moves to the RIGHT
number gets BIGGER
If ≥ to 5 increase 1st decimal place by one otherwise it stays the same
= 3.9
3.7
2.45 x 100 =
245

25. Decimal Numbers Now try TJ2a Ex 5 Ch7 (page 66) www.mathsrevision.com
Have you updated your Learning Log ?
Decimal Numbers
Now try TJ2a
Ex 5
Ch7 (page 66)
Are you on Target ?
I can ?
29-May-18
Created by Mr. Lafferty Maths Dept.