1. Partition Order Round whole numbers and decimals with up to 2 d.p.
WALT
Partition
Order
Round
whole numbers and
decimals with up to 2 d.p.

2. Partitioning Every number sits in it’s own column.
M 100Th 10th Th H T U =

3. Question 1 Partitioning
In your jotter show the value of: 6 9 2 7 4

4. Partitioning
ANSWERS 60
90 000
400

5. Partitioning with decimals H T U . 1/10 1/100
7 . 9
These two numbers are the same. Zeros written at the end of the complete number after the decimal point do not alter the value of the whole number.
You will need to remember this for the ordering activity.

6. Partitioning with decimals H T U . 1/10 1/100
In your jotter show the value of: 4 3 1 5

7. Partitioning with decimals
ANSWERS
4 units
3 hundreds
1 tenth
5 hundredths

8. Ordering
Once you know the value of each digit, you can put numbers in order according to their size.
When working with whole numbers, put them in order by lining up the units column.

9. Ordering
When working with whole numbers, put them in order by lining up the units column.
263
6 032
2 630 32
Try doing this in your jotter.
They should now look like this

10. Ordering 263 6 032 2 630 32 Now you can easily see that the order is

11. Ordering
In your jotter write these numbers in order starting with the smallest.
ANSWER

12. Ordering
When you use decimal numbers, it can be a bit more complicated to begin with.
First make sure that all the numbers have the same number of digits after the decimal point.
These can all be written with 2 decimal points

13. Ordering
If you then write the numbers in a vertical list with the decimal points lined up you can easily see the order.
23.40
3.42
43.20
324.00
Written in order from smallest to largest the numbers should read:
3.42
23.40
43.20
324.00

14. Ordering
ANSWER
876
78.6
8.67
6.78
In your jotter write these decimal numbers in order starting with the largest.

15. Rounding Rounded numbers are used all the time in every day life.
The number of marbles in a bag can be rounded to the nearest 10.

16. Rounding The number of sheep in a flock
could be rounded to the nearest 100

17. The number of runners in the London Marathon
Rounding
The number of runners in the London Marathon
can be rounded to
the nearest 1000

18. Rounding
ANSWERS
240
3890
460
7300
6000
On your whiteboard, round these numbers to the nearest 10
243
3892
456
7295
5999

19. Rounding decimals
Decimal numbers can be rounded to the nearest whole number, especially in the case of money or measure.
£1.99 can be rounded to £2
4 m 35 cm can be rounded to 4 m

20. Rounding decimals
In your jotter, round these amounts of money to the nearest pound.
£4.99
£8.42
£3.67
£9.75
£12.50
Answers £5 £8 £4
£10
£13

21. Plenary
You have been learning to partition, order and round whole numbers and decimals with up to 2 d.p.
Do you understand what each of these words mean?
Can you suggest examples from real life where it might be useful to be able to partition, order or round large numbers or numbers involving decimals?