Rounding Off Decimals

January 8,2016

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?

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?

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

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.

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

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

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

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?

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

Rounding Off

Number Whole Number

Tenths Hundredths

7.452

8.048

9.974

15.265

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

Rounding Off

Number Whole number

1 decimal place

2 decimal places

2.029

5.783

12.705

25.957

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