1. Rounding Off Using Number Line
400
300
200
100
500

2. Rounding Off Using Number Line
400
300
200
100
500 50
150
250
350
450

3. Rounding Off Using Number Line10 20 30 40 50 60 70 80 90
100

4. Rounding Off Using Number Line20 21 22 23 24 25 26 29 28 27 30

5. Round off 37 to the nearest ten
Rounding Off Using Number Line
Round off 37 to the nearest ten 10 20 30 40 50 60 90 80 70
100
37 is between 30 and 40.

6. 37  40 37 40 Round off 37 to the nearest ten X
Rounding Off Using Number Line
Round off 37 to the nearest ten X 37 31 32 33 34 35 36 37 38 39 30 40
37 is nearer to 40 than to 30.
37 is when rounded off to the nearest ten. 40
37  40

7. Round off 66 to the nearest ten
Rounding Off Using Number Line
Round off 66 to the nearest ten 10 20 30 40 50 60 90 80 70
100
66 is between 60 and 70.

8. 66  70 66 70 Round off 66 to the nearest ten X
Rounding Off Using Number Line
Round off 66 to the nearest ten X 66 61 62 63 64 65 66 67 68 69 60 70
66 is nearer to 70 than to 60.
66 is when rounded off to the nearest ten. 70
66  70

9. Round off 11 to the nearest ten
Rounding Off Using Number Line
Round off 11 to the nearest ten 10 20 30 40 50 60 90 80 70
100
11 is between 10 and 20.

10. 11  10 11 10 Round off 11 to the nearest ten X
Rounding Off Using Number Line
Round off 11 to the nearest ten X 11 11 12 13 14 15 16 17 18 19 10 20
11 is nearer to 10 than to 20.
11 is when rounded off to the nearest ten. 10
11  10

11. Round off 45 to the nearest ten
Rounding Off Using Number Line
Round off 45 to the nearest ten 10 20 30 40 50 60 90 80 70
100
45 is between 40 and 50.

12. 45  50 45 halfway 50 Round off 45 to the nearest ten X
Rounding Off Using Number Line
Round off 45 to the nearest ten X 45 41 42 43 44 45 46 47 48 49 40 50
45 is halfway between 40 and 50.
halfway
45 is when rounded off to the nearest ten. 50
45  50

13. Round off 186 to the nearest ten
Rounding Off Using Number Line
Round off 186 to the nearest ten
100
110
120
130
140
150
160
190
180
170
200
186 is between 180 and 190.

14. 186  190 186 190 Round off 186 to the nearest ten X
Rounding Off Using Number Line
Round off 186 to the nearest ten X
186
181
182
183
184
185
186
187
188
189
180
190
186 is nearer to 190 than to 180.
186 is when rounded off to the nearest ten.
190
186  190

15. Rounding Off Using Number Line
What are the other numbers that can be rounded off to 40 aside from 37? 37 31 32 33 34 35 36 37 38 39 30 40

16. Rounding Off Using Number Line
What are the other numbers that can be rounded off to 40 aside from 37? 37 35 36 37 38 39 41 42 43 44 45 40 no

17. Rounding Off Using Number Line
What are the other numbers that can be rounded off to 10 aside from 11? 11 11 12 13 14 15 16 17 18 19 10 20 no

18. Rounding Off Using Number Line
What are the other numbers that can be rounded off to 10 aside from 11? 11 6 7 8 9 10 12 13 14 5 15 no

19. The number of pupils in class Cana A is 30 when rounded off to the nearest ten. What could be the actual number of pupils in Cana A? 30 20 25 35 40
What could be the maximum number of students in class Cana A? 25 28 32 35 no 26 29 33 24 no 27 31 34

20. The number of pupils in class Cana A is 30 when rounded off to the nearest ten. What could be the actual number of pupils in Cana A? 30 20 25 35 40
What could be the minimum number of students in class Cana A? 25 28 32 35 no 26 29 33 24 no 27 31 34

21. What are the numbers in the ones place that can be rounded off to the nearest ten after the given number?
3 9
4 0 
Example:
40 is the nearest ten after 39 30 40 X 39

22. What are the numbers in the ones place that can be rounded off to the nearest ten after the given number?
16 8
170 
Example:
170 is the nearest ten after 168
160
170 X
168

23. What are the numbers in the ones place that can be rounded off to the nearest ten before the given number?
3 3 30 
Example:
30 is the nearest ten before 33 30 40 X 33

24. What are the numbers in the ones place that can be rounded off to the nearest ten before the given number?
18 2
180 
Example:
180 is the nearest ten before 182
180
190 X
182