Vertical Addition by Partition with 2-digit Numbers 60 + 56 110 (60 + 50) Add the tens 6 (0 + 6) Add the units 116 Vertical Addition by Partition with 3-digit Numbers 657 + 425 1000 (600 + 400) Add the hundreds 70 (50 + 20) Add the tens 12 (7 + 5) Add the units 1082 |