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Www.seomraranga.com. Decide: Which two tens is the number between Which ten is it nearest to www.seomraranga.com.

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Presentation on theme: "Www.seomraranga.com. Decide: Which two tens is the number between Which ten is it nearest to www.seomraranga.com."— Presentation transcript:

1 www.seomraranga.com

2 Decide: Which two tens is the number between Which ten is it nearest to www.seomraranga.com

3 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 www.seomraranga.com

4 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) www.seomraranga.com

5 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) www.seomraranga.com

6 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) www.seomraranga.com

7 617 Rounds to 620 www.seomraranga.com

8 632 Rounds to 630 www.seomraranga.com

9 888 Rounds to 890 www.seomraranga.com

10 255 Rounds to 260 www.seomraranga.com

11 197 Rounds to 200 www.seomraranga.com

12 Now try to round off the following numbers to the nearest 10 using the rules: www.seomraranga.com

13 228 Rounds to ? www.seomraranga.com

14 154 Rounds to ? www.seomraranga.com

15 772 Rounds to ? www.seomraranga.com

16 635 Rounds to ? www.seomraranga.com

17 899 Rounds to ? www.seomraranga.com

18 422 Rounds to ? www.seomraranga.com

19 138 Rounds to ? www.seomraranga.com

20 619 Rounds to ? www.seomraranga.com

21 493 Rounds to ? www.seomraranga.com

22 (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 www.seomraranga.com


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