1. Rounding Off Decimals
January 8,2016

2. Rounding Off Decimals
Round off 3.7 to the nearest whole number 3 4
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
Where are the nearest whole numbers?
3.7 is nearer to 4 than to 3
3.7 is ? when rounded off to the nearest whole number 4

3. Rounding Off Decimals
Round off to the nearest whole number 5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9 6
5.764
Where are the nearest whole numbers?
5.764 is nearer to 6 than to 5
5.764 is ? when rounded off to the nearest whole number 6

4. 7.6 What are the nearest two tenths? 7.62 is nearer to 7.6 than to 7.7
So it is between two tenths.
This is a hundredth.
Rounding Off Decimals
What is the first hundredth?
Round off 7.62 to the nearest tenth
7.6
7.68
7.7
7.61
7.62
7.63
7.64
7.65
7.66
7.67
7.69
Between two tenths there are 10 hundredths
What are the nearest two tenths?
7.62 is nearer to 7.6 than to 7.7
7.62 is ? when rounded off to the nearest tenth
7.6

5. 4.6 Where are the nearest tenths? 4.55 is halfway between 4.5 and 4.6
This is a hundredth.
Rounding Off Decimals
Round off 4.55 to the nearest tenth
4.5
4.6
4.51
4.52
4.53
4.54
4.55
4.56
4.57
4.58
4.59
Rounding off to the nearest tenth is the same as rounding off to 1 decimal place.
Where are the nearest tenths?
4.55 is halfway between 4.5 and 4.6
4.55 is ? when rounded off to the nearest tenth
4.6

6. Rounding Off Decimals
If the digit is equal to 5 or more than 5, add 1 to the digit in the tenths place.
4.56  4.6
4.72  4.7
If the digit is less than 5, retain the digit in the tenths place.
4.85  4.9
When rounding off to 1 decimal place, consider the digit in the hundredths place only.

7. What are the nearest two hundredths?
This is a thousandth.
So it is between two hundredths.
Rounding Off Decimals
What is the first thousandth?
Round off to the nearest hundredth
4.512
4.514
4.516
4.51
4.518
4.52
4.511
4.513
4.515
4.517
4.519
Between two hundredths there are 10 thousandths
What are the nearest two hundredths?
4.518 is nearer to 4.52 than to 4.51
4.518 is ? when rounded off to the nearest hundredth
4.52

8. 8.36 What are the nearest two hundredths?
This is a thousandth.
So it is between two hundredths.
Rounding Off Decimals
What is the first thousandth?
Round off to the nearest hundredth
8.362
8.364
8.366
8.36
8.368
8.37
8.361
8.363
8.365
8.367
8.369
Between two hundredths there are 10 thousandths
What are the nearest two hundredths?
8.364 is nearer to 8.36 than to 8.37
8.364 is ? when rounded off to the nearest hundredth
8.36

9. 4.52 Where are the nearest hundredths?
This is a thousandth.
Rounding Off Decimals
Round off to the nearest hundredth
4.512
4.514
4.516
4.51
4.518
4.52
4.511
4.513
4.515
4.517
4.519
Rounding off to the nearest hundredth is the same as rounding off to 2 decimal places.
Where are the nearest hundredths?
4.515 is halfway between 4.51 and 4.52
4.515 is ? when rounded off to the nearest hundredth
4.52

10. Rounding Off Decimals
If the digit is equal to 5 or more than 5, add 1 to the digit in the hundredths place.
4.528  4.53
4.564  4.56
If the digit is less than 5, retain the digit in the hundredths place.
4.515  4.52
When rounding to 2 decimal places, consider the digit in the thousandths place only.

11. Rounding Off Number Whole Number Tenths Hundredths 7.452 8.048 9.974
15.265

12. Rounding Off Number Whole Number Tenths Hundredths 7.452 7 7.5 7.45
8.048 8
8.0
8.05
9.974 10
9.97
15.265 15
15.3
15.27

13. Rounding Off Number Whole number 1 decimal place 2 decimal places
2.029
5.783
12.705
25.957

14. Rounding Off Number Whole number 1 decimal place 2 decimal places
2.029 2
2.0
2.03
5.783 6
5.8
5.78
12.705 13
12.7
12.71
25.957 26
25.96