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

2. Mathematics Objective Y4: Round any positive integer less than 1000 to the nearest …. 100.

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

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

5. 2. Write this to the nearest hundred: 418 781

6. 3. Write this to the nearest hundred: 213 422

7. 4. Write this to the nearest hundred: 862 289

8. 5. Write this to the nearest hundred: 182 426

9. 6. Write this to the nearest hundred: 516 713

10. 7. Write this to the nearest hundred: 567 957

11. 8. Write this to the nearest hundred: 172 622

12. 9. Write this to the nearest hundred: 349 228

13. 10. Write this to the nearest hundred: 982 532

14. 11. Write this to the nearest hundred: 99 842

15. 12. Write this to the nearest hundred: 565 479

16. 13. Write this to the nearest hundred: 342 619

17. 14. Write this to the nearest hundred: 214 477

18. 15. Write this to the nearest hundred: 931 845

19. 16. Write this to the nearest hundred: 468 938

20. 17. Write this to the nearest hundred: 727 453

21. 18. Write this to the nearest hundred: 254 192

22. 19. Write this to the nearest hundred: 346 450

23. 20. Write this to the nearest hundred: 250 498

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