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Adding Decimal Numbers Using
The Column Method

For more maths help & free games related to
this, visit: www.makemymathsbe...
For example: 3.77 + 4.28
For example: 3.77 + 4.28
Firstly, line the numbers up correctly

U
3
+ 4

t
7
2

h
7
8
For example: 3.77 + 4.28
Firstly, line the numbers up correctly and add a decimal point in
the answer bar:
U
3
+ 4

t
7
2
...
U
3
+ 4

t
7
2

h
7
8

Then add up the
hundredths:
U
3
+ 4

t
7
2

h
7
8

Then add up the
hundredths:
7 + 8 = 15
U
3
+ 4

t
7
2

h
7
8
5

Then add up the
hundredths:
7 + 8 = 15
The 5 is written in the
hundredths column
U
3
+ 4

t
7
2

h
7
8
5

1

Then add up the
hundredths:
7 + 8 = 15
The 5 is written in the
hundredths column and
the 1 is ...
U
3
+ 4

t
7
2

Now add up the tenths:

h
7
8
5

1
U
3
+ 4

t
7
2

Now add up the tenths:
7 + 2 + 1 = 10 tenths

h
7
8
5

1
U
3
+ 4
Now add up the tenths:
7 + 2 + 1 = 10 tenths
The 0 is written in the
tenths column

t
7
2

h
7
8

0

5

1
U
3
+ 4
Now add up the tenths:
7 + 2 + 1 = 10 tenths
The 0 is written in the
tenths column and the 1
is carried into the
U...
U
3
+ 4

1

h
7
8

0

Finally, add up the units:

t
7
2

5

1
U
3
+ 4

1

h
7
8

0

Finally, add up the units:
3+4+1=8

t
7
2

5

1
U
3
+ 4
Finally, add up the units:
3+4+1=8
The 8 is written in the
Units column

t
7
2

h
7
8

8

0

5

1

1
U
3
+ 4

t
7
2

h
7
8

8

0

5

1

1
That’s it for now......
For more help with your maths, try
my book:
mastering multiplication tables
on amazon.com
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Adding Decimals

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Adding Decimals

  1. 1. Adding Decimal Numbers Using The Column Method For more maths help & free games related to this, visit: www.makemymathsbetter.com
  2. 2. For example: 3.77 + 4.28
  3. 3. For example: 3.77 + 4.28 Firstly, line the numbers up correctly U 3 + 4 t 7 2 h 7 8
  4. 4. For example: 3.77 + 4.28 Firstly, line the numbers up correctly and add a decimal point in the answer bar: U 3 + 4 t 7 2 h 7 8
  5. 5. U 3 + 4 t 7 2 h 7 8 Then add up the hundredths:
  6. 6. U 3 + 4 t 7 2 h 7 8 Then add up the hundredths: 7 + 8 = 15
  7. 7. U 3 + 4 t 7 2 h 7 8 5 Then add up the hundredths: 7 + 8 = 15 The 5 is written in the hundredths column
  8. 8. U 3 + 4 t 7 2 h 7 8 5 1 Then add up the hundredths: 7 + 8 = 15 The 5 is written in the hundredths column and the 1 is carried into the tenths column and written below the answer bar.
  9. 9. U 3 + 4 t 7 2 Now add up the tenths: h 7 8 5 1
  10. 10. U 3 + 4 t 7 2 Now add up the tenths: 7 + 2 + 1 = 10 tenths h 7 8 5 1
  11. 11. U 3 + 4 Now add up the tenths: 7 + 2 + 1 = 10 tenths The 0 is written in the tenths column t 7 2 h 7 8 0 5 1
  12. 12. U 3 + 4 Now add up the tenths: 7 + 2 + 1 = 10 tenths The 0 is written in the tenths column and the 1 is carried into the UNITS column and written below the answer bar. h 7 8 0 1 t 7 2 5 1
  13. 13. U 3 + 4 1 h 7 8 0 Finally, add up the units: t 7 2 5 1
  14. 14. U 3 + 4 1 h 7 8 0 Finally, add up the units: 3+4+1=8 t 7 2 5 1
  15. 15. U 3 + 4 Finally, add up the units: 3+4+1=8 The 8 is written in the Units column t 7 2 h 7 8 8 0 5 1 1
  16. 16. U 3 + 4 t 7 2 h 7 8 8 0 5 1 1
  17. 17. That’s it for now...... For more help with your maths, try my book: mastering multiplication tables on amazon.com

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