The document provides tips for expanded column addition. It instructs to write numbers underneath each other with the units, tens, and hundreds in the correct columns. It then explains to start by adding the units from right to left before moving left to add the tens, being careful to add tens and not units at this stage. Finally, add the hundreds and total the full calculation. Sticking to these steps of placing numbers correctly and adding place values from right to left will lead to success.

1. Rules for Expanded
Column Addition
A few tips to help you out!

2. Write your numbers in
the right place!!
• Put your numbers underneath
each other.
HTU
135
+ 42
• Remember your 100s, 10s and
units!!

3. Always start with
the units!
• Start with the smallest
numbers. (UNITS)
135
+ 42
7 (5 + 2)
• Work from right to left.

4. Next go on to add
the tens!
• Put the tens underneath the
units.
135
+ 42
7 (5 +2)
70 (30 + 40)
• DON’T FORGET THAT YOU ARE
ADDING 10S NOT UNITS!

5. Finally add your 100s
and total it all up!!
135
+ 42
7 (5 + 2)
70 ( 30 + 40)
100 ( 100 + 0)
177

6. So, stick with these
and you’ll be fine!!
• Put the numbers in the right
place.
• Always start with the units.
• Next go on to add the 10s.
• Don’t forget that you’re adding
10s now!
• Then add the 100s and total it
all up!

7. So, stick with these
and you’ll be fine!!
• Put the numbers in the right
place.
• Always start with the units.
• Next go on to add the 10s.
• Don’t forget that you’re adding
10s now!
• Then add the 100s and total it
all up!