1. Rounding to the Nearest 10 (Larger Numbers)
Rounding to the Nearest 10 (Larger Numbers)

2. Rounding to the Nearest 10
Rounding to the Nearest 10
Decide:
Which two tens is the number between
Which ten is it nearest to

3. Rounding to the Nearest 10
Rounding to the Nearest 10
Rules:
If it ends in numbers 1 to 4 round to the ten before
If it ends in numbers 6 to 9, round to the ten after
If it ends in 5 (which is half way between two tens) always round up to the higher ten

4. Rounding to the Nearest 10
Rounding to the Nearest 10
Example 1
Round off 134
It is between 130 and 140
It ends in 4, so it rounds down to 130
(You only have to go back 4 to get to 130, but you would have to go forward 6 to get to 140)

5. Rounding to the Nearest 10
Rounding to the Nearest 10
Example 2
Round off 357
It is between 350 and 360
It ends in 7, so it rounds up to 360
(You only have to go forward 3 to get to 360, but you would have to go back 7 to get to 350)

6. Rounding to the Nearest 10
Rounding to the Nearest 10
Example 3
Round off 575
It is between 570 and 580
It ends in 5, so it rounds up to 580
(The rule is that when it ends in 5, it is half way between the two tens, so you always round up to the higher ten)

7. Rounding to the Nearest 10
Rounding to the Nearest 10
617
Rounds to
620

8. Rounding to the Nearest 10
Rounding to the Nearest 10
632
Rounds to
630

9. Rounding to the Nearest 10
Rounding to the Nearest 10
888
Rounds to
890

10. Rounding to the Nearest 10
Rounding to the Nearest 10
255
Rounds to
260

11. Rounding to the Nearest 10
Rounding to the Nearest 10
197
Rounds to
200

12. Rounding to the Nearest 10
Rounding to the Nearest 10
Now try to round off the following numbers to the nearest 10 using the rules:

13. Rounding to the Nearest 10
Rounding to the Nearest 10
228
Rounds to ?

14. Rounding to the Nearest 10
Rounding to the Nearest 10
154
Rounds to ?

15. Rounding to the Nearest 10
Rounding to the Nearest 10
772
Rounds to ?

16. Rounding to the Nearest 10
Rounding to the Nearest 10
635
Rounds to ?

17. Rounding to the Nearest 10
Rounding to the Nearest 10
899
Rounds to ?

18. Rounding to the Nearest 10
Rounding to the Nearest 10
422
Rounds to ?

19. Rounding to the Nearest 10
Rounding to the Nearest 10
138
Rounds to ?

20. Rounding to the Nearest 10
Rounding to the Nearest 10
619
Rounds to ?

21. Rounding to the Nearest 10
Rounding to the Nearest 10
493
Rounds to ?

22. Round off these numbers in your copy:
Round off these numbers in your copy:
(a) 221
(b) 337
(c) 414
(d) 577
(e) 698
(f) 712
(g) 889
(h) 994
(i) 155
(j) 373
(k) 865
(l) 636
(m) 366
(n) 142
(o) 571
(p) 488
(q) 539
(r) 768
(s) 585
(t) 372