Adding Hundreds
How to add threedigit numbers (for example 600 + 500).
 Place one number above the other so the hundreds' place digits, the tens' place
digits and ones' place digits are lined up. Draw a line under the bottom number.
600
500
 Add the two ones' place digits. (0 + 0 = 0).
600
500
0
 Add the numbers in the tens' place column (0 + 0 = 0) and place the answer below
the line and to the left of the ones' place sum.
600
500
00
 Add the numbers in the hundreds' place column (6 + 5 = 11) and place the answer below
the line and to the left of the tens' place sum.
600
500
1100

