CARRYING IN ADDITION
Most of you are familiar with the idea of carrying in addition. In actual practice, you mentally
carry a number into the next column. This example will show you why you carry.
Add the numbers:
239
The sum of the units column is
26
542
The sum of the tens column is
130
819
The sum of the hundreds column is
1800
356
1956
?
When you find the sum of the units column to be 26, you write the 6 in the units column, but
you have 2 tens also. So you must carry the 2 tens to the second, or tone, column.
The sum of the tens column is 1 hundred and 3 tens. So you write the 3 tens in the
column
and carry the 1 hundred to the
column.
The sum of the hundreds column is 1 thousand and
hundreds. So you write the
in the hundreds column and carry the
thousands to the
column.
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