Rounding Off Decimals January 8,2016.
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Transcript of Rounding Off Decimals January 8,2016.
![Page 1: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/1.jpg)
Rounding Off Decimals
January 8,2016
![Page 2: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/2.jpg)
3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4
Round off 3.7 to the nearest whole number
3.7 is nearer to 4 than to 3
3.7 is ? when rounded off to the nearest whole number
4
Rounding Off Decimals
Where are the nearest whole numbers?
![Page 3: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/3.jpg)
5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6
Round off 5.764 to the nearest whole number
5.764 is nearer to 6 than to 5
5.764 is ? when rounded off to the nearest whole number
6
5.764
Rounding Off Decimals
Where are the nearest whole numbers?
![Page 4: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/4.jpg)
7.6 7.61 7.62 7.63 7.64 7.65 7.66 7.67 7.68 7.69 7.7
Round off 7.62 to the nearest tenth
7.62 is nearer to 7.6 than to 7.77.62 is ? when rounded off to the nearest tenth
7.6
Rounding Off Decimals This is a hundredth.
So it is between two tenths.What is the first
hundredth?
What are the nearest two tenths?Between two tenths there are 10 hundredths
![Page 5: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/5.jpg)
4.5 4.51 4.52 4.53 4.54 4.55 4.56 4.57 4.58 4.59 4.6
Round off 4.55 to the nearest tenth
4.55 is halfway between 4.5 and 4.64.55 is ? when rounded off to the nearest tenth
4.6
Rounding off to the nearest tenth is the same as rounding off to 1 decimal place.
Rounding Off Decimals
Where are the nearest tenths?
This is a hundredth.
![Page 6: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/6.jpg)
4.56 4.6
4.72 4.7
4.85 4.9
When rounding off to 1 decimal place, consider the digit in the hundredths place only.
If the digit is equal to 5 or more than 5, add 1 to the digit in the tenths place.
If the digit is less than 5, retain the digit in the tenths place.
Rounding Off Decimals
![Page 7: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/7.jpg)
4.518 is ? when rounded off to the nearest hundredth
4.51 4.511 4.512 4.513 4.514 4.515 4.516 4.517 4.518 4.519 4.52
Round off 4.518 to the nearest hundredth
4.52
Rounding Off Decimals
4.518 is nearer to 4.52 than to 4.51
This is a thousandth.
So it is between two hundredths.What is the first
thousandth?
What are the nearest two hundredths?Between two hundredths there are 10 thousandths
![Page 8: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/8.jpg)
8.364 is ? when rounded off to the nearest hundredth
8.36 8.361 8.362 8.363 8.364 8.365 8.366 8.367 8.368 8.369 8.37
Round off 8.364 to the nearest hundredth
8.364 is nearer to 8.36 than to 8.378.36
Rounding Off Decimals This is a thousandth.
So it is between two hundredths.What is the first
thousandth?
What are the nearest two hundredths?Between two hundredths there are 10 thousandths
![Page 9: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/9.jpg)
4.51 4.511 4.512 4.513 4.514 4.515 4.516 4.517 4.518 4.519 4.52
Round off 4.515 to the nearest hundredth
4.515 is halfway between 4.51 and 4.524.515 is ? when rounded off to the nearest hundredth
4.52
Rounding off to the nearest hundredth is the same as rounding off to 2 decimal places.
Rounding Off Decimals This is a thousandth.
Where are the nearest hundredths?
![Page 10: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/10.jpg)
4.528 4.53
4.564 4.564.515 4.52
When rounding to 2 decimal places, consider the digit in the thousandths place only.
If the digit is equal to 5 or more than 5, add 1 to the digit in the hundredths place.
If the digit is less than 5, retain the digit in the hundredths place.
Rounding Off Decimals
![Page 11: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/11.jpg)
Rounding Off
Number Whole Number
Tenths Hundredths
7.452
8.048
9.974
15.265
![Page 12: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/12.jpg)
Rounding Off
Number Whole Number
Tenths Hundredths
7.452 7 7.5 7.45
8.048 8 8.0 8.05
9.974 10 10 9.97
15.265 15 15.3 15.27
![Page 13: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/13.jpg)
Rounding Off
Number Whole number
1 decimal place
2 decimal places
2.029
5.783
12.705
25.957
![Page 14: Rounding Off Decimals January 8,2016.](https://reader035.fdocuments.us/reader035/viewer/2022081502/5a4d1b657f8b9ab0599afe46/html5/thumbnails/14.jpg)
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 26 25.96