1. Rounding off
- to the nearest hundred
mei 2010

2. Rounding off to the nearest ten
Round off to the
Number Number line nearest ten
82 _____ ≈_____
117 _____ ≈_____

3. Rounding off to the nearest ten
Round off to the
Number Number line nearest ten
863 _____ ≈_____
4156 _____ ≈_____

4. Rounding off to the nearest ten
Round off to the
Number Number line nearest ten
6381 _____ ≈_____
81 098 _____ ≈_____

5. Circle and Underline Method
This digit will tell you the nearest tens are 30 and 40
34
This digit will tell you to round up or round down

6. Rounding off to the nearest ten
82 ≈
117 ≈

7. Rounding off to the nearest ten
863 ≈
4156 ≈

8. Rounding off to the nearest ten
863 ≈ 860
4156 ≈ 4160
98 995 ≈ 99 000

9. Rounding off to the nearest hundred
Round off to the
Number Number line nearest hundred
1031
_____ ≈_____
2935 _____ ≈_____
mei 2010

10. Rounding off to the nearest hundred
Round off to the
Number Number line nearest hundred
17 609 _____ ≈_____
69 984 _____ ≈_____

11. Rounding off to the nearest hundred
Round off to the
Number
Number line nearest hundred
19 689 _____ ≈_____
99 743 _____ ≈_____

12. Rounding off to the nearest hundred
Circle and Underline Method
1863 ≈ 1800
4156 ≈ 4200
98 995 ≈ 99 000

13. Don’t be fooled!
Nearest ten Nearest hundred
158
263
1031

14. Don’t be fooled!
Nearest ten Nearest hundred
2935
19 689
99 743