1. Rounding to the Nearest 100 (Larger Numbers)

2. Rounding to the Nearest 100
Decide:
Which two hundreds is the number between
Which hundred is it nearest to

3. Rounding to the Nearest 100
Rules:
If it ends in a number between 1 and 49 round to the hundred before
If it ends in a number between 51 and 99, round to the hundred after
If it ends in 50 (which is half way between two hundreds) always round up to the higher hundred

4. Rounding to the Nearest 100
Example 1
Round off 2143
It is between 2100 and 2200
It ends in 43, so it rounds down to 2100
(You only have to go back 43 to get to 2100, but you would have to go forward 57 to get to 2200)

5. Rounding to the Nearest 100
Example 2
Round off 7456
It is between 7400 and 7500
It ends in 56, so it rounds up to 7500
(You only have to go forward 44 to get to 7500, but you would have to go back 56 to get to 7400)

6. Rounding to the Nearest 100
Example 3
Round off 8750
It is between 8700 and 8800
It ends in 50, so it rounds up to 8800
(The rule is that when it ends in 50, it is half way between the two hundreds, so you always round up to the higher hundred)

7. Rounding to the Nearest 100
1255
Rounds to
1300

8. Rounding to the Nearest 100
3429
Rounds to
3400

9. Rounding to the Nearest 100
8448
Rounds to
8400

10. Rounding to the Nearest 100
5250
Rounds to
5300

11. Rounding to the Nearest 100
9177
Rounds to
9200

12. Rounding to the Nearest 100
Now try to round off the following numbers to the nearest 100 using the rules:

13. Rounding to the Nearest 100
2129
Rounds to ?

14. Rounding to the Nearest 100
5474
Rounds to ?

15. Rounding to the Nearest 100
7131
Rounds to ?

16. Rounding to the Nearest 100
4552
Rounds to ?

17. Rounding to the Nearest 100
6591
Rounds to ?

18. Rounding to the Nearest 100
2002
Rounds to ?

19. Rounding to the Nearest 100
5598
Rounds to ?

20. Rounding to the Nearest 100
1589
Rounds to ?

21. Rounding to the Nearest 100
6350
Rounds to ?

22. Round off these numbers to the nearest 100 in your copy:
(g) 8819
(h) 1254
(i) 7150
(j) 3363
(k) 2865
(l) 4444
(m) 3216
(n) 7812
(o) 5499
(p) 4828
(q) 1559
(r) 7008
(s) 5531
(t) 3250