Add 3-digit numbers without regrouping
~10 min
Add ones, tens, and hundreds when each place stays under ten.
Add Each Place Value
312
Th
0
H
3
T
1
O
2
To add 3-digit numbers, you add the ones to the ones, the tens to the tens, and the hundreds to the hundreds.
💡 Start by looking at the digits in the same place value column.