Vertical Addition by Partition with 2-digit Numbers 36 + 14 40 (30 + 10) Add the tens 10 (6 + 4) Add the units 50 Vertical Addition by Partition with 3-digit Numbers 725 + 183 800 (700 + 100) Add the hundreds 100 (20 + 80) Add the tens 8 (5 + 3) Add the units 908 |