1. Rounding up – and down! Mental Mathematics Starters Activity 3a

2. Mathematics Objective Y4: Round any positive integer less than 1000 to the nearest 10….

3. Using this should help you learn: To say which ten a given number is the nearest to. Target = 17 correct

4. 1. Write this to the nearest ten: 63 137

5. 2. Write this to the nearest ten: 48 711

6. 3. Write this to the nearest ten: 23 472

7. 4. Write this to the nearest ten: 82 235

8. 5. Write this to the nearest ten: 12 346

9. 6. Write this to the nearest ten: 56 673

10. 7. Write this to the nearest ten: 27 857

11. 8. Write this to the nearest ten: 7 423

12. 9. Write this to the nearest ten: 39 728

13. 10. Write this to the nearest ten: 98 561

14. 11. Write this to the nearest ten: 99 998

15. 12. Write this to the nearest ten: 55 336

16. 13. Write this to the nearest ten: 42 683

17. 14. Write this to the nearest ten: 14 547

18. 15. Write this to the nearest ten: 31 145

19. 16. Write this to the nearest ten: 4 859

20. 17. Write this to the nearest ten: 77 414

21. 18. Write this to the nearest ten: 94 962

22. 19. Write this to the nearest ten: 36 975

23. 20. Write this to the nearest ten: 61 122

24. Evaluation... Did you: Say correctly which ten at least 17 of these numbers were nearest to?