To find the sum of three digit numbers, you need to first add the ones
place value. You might need to regroup the ones as in the
example below.
Then add the tens place value. Next, the hundreds place
value.
Find the sum.
Hundreds
Tens
Ones
1
3
5
4
1
2
7
+_________
1
Add the ones. Regroup!
Hundreds
Tens
Ones
1
3
5
4
1
2
7
+_________
1
Add the tens.
Hundreds
Tens
Ones
1
3
5
4
1
2
7
+_________
8
1
Add the hundreds.
Hundreds
Tens
Ones
1
3
5
4
1
2
7
+_________
4
8
1
Complete the problems below.
Hundreds
Tens
Ones
1
4
3
5
1
4
7
+____ ____
Hundreds
Tens
Ones
4
3
5
1
4
7
+_________
2
Hundreds
Tens
Ones
1
4
3
5
1
4
7
+_________
Hundreds
Tens
Ones
Hundreds
Tens
Ones
Hundreds
Tens
Ones
3
6
7
6
4
9
2
5
6
5
2
8
2
4
7
4
2
5
+ _________
+
_________
+
_________
5
9
2
3
6
+ 4 5
7
1
2
3
+ 2 3 9
4
2
8
+ 3 5 4
7
1
3
+ 1 2 8
9
2
3
+ 4 7
4
2
5
+ 1 3 9
5
6
8
+ 3 3 9
3
4
5
+ 1 2 6
6
1
4
+ 1 2 7
5
7
1
+ 1 0 9
3
0
7
+ 2 4 7
5
7
8
+ 3 2 6
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