Date post: | 06-Jan-2018 |
Category: |
Documents |
Upload: | ann-johnson |
View: | 222 times |
Download: | 0 times |
Rounding up – and down!
Mental Mathematics Starters
Activity 3a
Mathematics Objective
Y4: Round any positive integer less than 1000 to the nearest 10….
Using this should help you learn:
To say which ten a given number is the nearest to.
Target = 17 correct
1. Write this to the nearest ten:
63137
2. Write this to the nearest ten:
48711
3. Write this to the nearest ten:
23472
4. Write this to the nearest ten:
82235
5. Write this to the nearest ten:
12346
6. Write this to the nearest ten:
56673
7. Write this to the nearest ten:
27857
8. Write this to the nearest ten:
7423
9. Write this to the nearest ten:
39728
10. Write this to the nearest ten:
98561
11. Write this to the nearest ten:
99998
12. Write this to the nearest ten:
55336
13. Write this to the nearest ten:
42683
14. Write this to the nearest ten:
14547
15. Write this to the nearest ten:
31145
16. Write this to the nearest ten:
4859
17. Write this to the nearest ten:
77414
18. Write this to the nearest ten:
94962
19. Write this to the nearest ten:
36975
20. Write this to the nearest ten:
61122
Evaluation . . . Did you:
Say correctly which ten at least 17 of these numbers were nearest to?