Adding 2-digits

1. PowerPoint A1 L2
Use effective written methods to
add whole numbers.

2. Written Method – Addition
57 + 76 =
We can work out the answer to this sum using
column addition.

3. 57
Position your
digits carefully
ensuring that
the tens are
over the tens
and the units
are over the
units.
Now we add up
the units. If they
total 10 or more
we need to
carry any tens
over into the
tens column.
Now we add up
the tens.
Remember to
add on any tens
that have been
carried over
from the units
+ 76 + 76
1
57
3
+ 76
1
57
133

4. Let’s have a go at another one.

5. 69 + 58 =

6. 69
Position your
digits carefully
ensuring that
the tens are
over the tens
and the units
are over the
units.
Now we add up
the units. If they
total 10 or more
we need to
carry any tens
over into the
tens column.
Now we add up
the tens.
Remember to
add on any tens
that have been
carried over
from the units
+ 58 + 58
1
69
7
+ 58
1
69
127

7. Let’s have a go at another one.

8. 37 + 85 =

9. 37
Position your
digits carefully
ensuring that
the tens are
over the tens
and the units
are over the
units.
Now we add up
the units. If they
total 10 or more
we need to
carry any tens
over into the
tens column.
Now we add up
the tens.
Remember to
add on any tens
that have been
carried over
from the units
+ 85 + 85
1
37
2
+ 85
1
37
122