A poster displaying addition by trading.
Print this poster out in A3 or larger and display it in your classroom.
Refer to it when you are working with addition concepts.
Information includes:
46+32 = 78
1. Rearrange the equation so
that the numbers line up above
and below.
2. Do the additions one column
at a time.
What if a column adds up to a
double digit number?
47+25 = 72
1. Add the ones column.
7+5 = 12
2. Put the ones value (2) in the
ones answer spot. Put the tens
value (1) above the tens column.
3. Add all numbers in the tens
column. Put the answer in the tens
answer spot.
1+4+2 = 7
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