1. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Revision of Decimals
Multiplying by 20, 30 and 500
Dividing by 20, 30 and 500
9-May-19
Created by Mr. Lafferty Maths Dept.

2. Created by Mr. Lafferty Maths Dept.
Starter Questions
9-May-19
Created by Mr. Lafferty Maths Dept.

3. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Learning Intention
Success Criteria
1. We are revising decimal work that we have done so far.
Be confident of decimal work covered so far.
9-May-19
Created by Mr. Lafferty Maths Dept.

4. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Lessons covered so far
Revision of work so far
9-May-19
Created by Mr. Lafferty Maths Dept.

5. Created by Mr. Lafferty Maths Dept.
Starter Questions
3cm
9-May-19
Created by Mr. Lafferty Maths Dept.

6. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Learning Intention
Success Criteria
1 We are learning to multiple by 20 , 500 and 4000.
Understand the steps to multiply by 20, 500 and 4000.
9-May-19
Created by Mr. Lafferty Maths Dept.

7. Decimal Numbers www.mathsrevision.com
Multiply by 20,500,4000
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.
9-May-19
Created by Mr. Lafferty Maths Dept.

8. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Multiply by 20,500,4000
Example : Calculate 20 x 5.2
Step 1 : 10 x 5.2 = 52
Step 2 : 2 x 52 =
9-May-19
Created by Mr. Lafferty Maths Dept.

9. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Multiply by 20,500,4000
Example : Calculate x 300
Step 1 : x 100 =
8695.3
Step 2 : x 3 =
9-May-19
Created by Mr. Lafferty Maths Dept.

10. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Multiply by 20,500,4000
Example : Calculate 5000 x 16.78
Step 1 : 1000 x =
16780
Step 2 : x 5 =
9-May-19
Created by Mr. Lafferty Maths Dept.

11. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Now try TJ2b
Ex 1
Ch4 (page 38)
9-May-19
Created by Mr. Lafferty Maths Dept.

12. The answer to the question is
Starter Questions
The answer to the question is 60
Write down as many questions as you can
9-May-19
Created by Mr. Lafferty Maths Dept.

13. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Divide by 20,500,4000
Learning Intention
Success Criteria
1. Be able to confidently divide by 20, 500 and 4000.
1. We are learning to divide by 20 , 500, 4000.
9-May-19
Created by Mr. Lafferty Maths Dept.

14. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Divide by 20,500,4000
Example : Calculate ÷ 200
Since 200 divide by 100 then divide by 2:
Step 1 : ÷ 100 =
16.254
Step 2 : ÷ 2 =
9-May-19
Created by Mr. Lafferty Maths Dept.

15. Created by Mr. Lafferty Maths Dept.
Decimal Numbers
Divide by 20,500,4000
Example : Calculate 1248 ÷ 6000
Since 6000 divide by 1000 then divide by 6:
Step 1 : 1248 ÷ =
1.248
Step 2 : ÷ 6 =
9-May-19
Created by Mr. Lafferty Maths Dept.

16. Have you updated your Learning Log ?
Decimal Numbers
Divide by 20,500,4000
Now try TJ2b
Ex 3
Ch4 (page 39)
Are you on Target ?
I can ?
9-May-19
Created by Mr. Lafferty Maths Dept.