How to round a decimal number to the nearest whole number

For more maths help & free games related to this, visit: www.makemymathsbetter.com

First look at the value of the digit in the tenths column

4.7 Has 7 tenths

First look at the value of the digit in the tenths column

4.7 Has 7 tenths

5.58 Has 5 tenths

First look at the value of the digit in the tenths column

4.7 Has 7 tenths

5.58 Has 5 tenths

3.276 Has 2 tenths

First look at the value of the digit in the tenths column

4.7 Has 7 tenths

5.58 Has 5 tenths

3.276 Has 2 tenths

4.3 Has 3 tenths

You round down to the nearest whole number if the tenths digit is 0,1,2,3 or 4.

3.2 is rounded down to 3

You round down to the nearest whole number if the tenths digit is 0,1,2,3 or 4.

3.2 is rounded down to 3

4.32 is rounded down to 4

You round down to the nearest whole number if the tenths digit is 0,1,2,3 or 4.

3.2 is rounded down to 3

4.32 is rounded down to 4

17.158 is rounded down to 17

You round down to the nearest whole number if the tenths digit is 0,1,2,3 or 4.

3.2 is rounded down to 3

4.32 is rounded down to 4

17.158 is rounded down to 17

120.06 is rounded down to 120

You round down to the nearest whole number if the tenths digit is 0,1,2,3 or 4.

3.2 is rounded down to 3

4.32 is rounded down to 4

17.158 is rounded down to 17

120.06 is rounded down to 120

45.4 is rounded down to 45

You round up to the nearest whole number if the tenths digit is 5,6,7,8 or 9.

4.7 is rounded up to 5

You round up to the nearest whole number if the tenths digit is 5,6,7,8 or 9.

4.7 is rounded up to 5

5.58 is rounded up to 6

You round up to the nearest whole number if the tenths digit is 5,6,7,8 or 9.

4.7 is rounded up to 5

5.58 is rounded up to 6

17.872 is rounded up to 18

You round up to the nearest whole number if the tenths digit is 5,6,7,8 or 9.

4.7 is rounded up to 5

5.58 is rounded up to 6

17.872 is rounded up to 18

125.92 is rounded up to 126

You round up to the nearest whole number if the tenths digit is 5,6,7,8 or 9.

4.7 is rounded up to 5

5.58 is rounded up to 6

17.872 is rounded up to 18

125.92 is rounded up to 126

46.6 is rounded up to 47

Watch out for numbers which have 9 in the units column.

e.g. 9.57If you are rounding up, you will make 10 units. This makes 1 ten, so you have to round to the

next ten (in this case to 10).

Watch out for numbers which have 9 in the units column.

e.g. 9.57If you are rounding up, you will make 10 units. This makes 1 ten, so you have to round to the

next ten (in this case to 10).

For the same reason, 29.87 becomes 30

Watch out for numbers which have 9 in the units column.

e.g. 9.57If you are rounding up, you will make 10 units. This makes 1 ten, so you have to round to the

next ten (in this case to 10).

For the same reason, 29.87 becomes 30

19.75 becomes 20

Watch out for numbers which have 9 in the units column.

e.g. 9.57If you are rounding up, you will make 10 units. This makes 1 ten, so you have to round to the

next ten (in this case to 10).

For the same reason, 29.87 becomes 30

19.75 becomes 20

And 459.68 becomes 460

That’s it for now......

For more help with your maths, try my book:

mastering multiplication tableson amazon.com