Partial Sums

1
Partial Sums

• An Addition Algorithm

2
Partial Sums
600
Add the tens (60 80)
140
Add the ones (8 3)
751
3
Let's try another one
1300
Add the tens (80 40)
120
Add the ones (5 1)
1426
4
Do this one on your own
Let's see if you're right.
1200
100
1318
Well Done!