Vertical Addition by Partition with 2-digit Numbers 88 + 58 130 (80 + 50) Add the tens 16 (8 + 8) Add the units 146 Vertical Addition by Partition with 3-digit Numbers 107 + 455 500 (100 + 400) Add the hundreds 50 (0 + 50) Add the tens 12 (7 + 5) Add the units 562 |