350
Solve 420 - 200 using Base 10 Blocks.
220.
450.
Solve 300 + 220 using Expanded Form.
520.
Solve 500 - 100 using Expanded Form.
400.
Solve 462 + 310 using Base 10 Blocks.
772.
Solve 532 - 110 using Base 10 Blocks.
422.
Create a number line to solve 840 - 220.
620.
Solve 340 + 360 using Expanded Form.
700.
Solve 645 - 245 using Expanded Form.
400.
Solve 347 + 343 using Base 10 Blocks.
680.
Solve 799 - 288 using Base 10 Blocks.
Create a number line to solve 457 + 350.
807.
Solve 623 + 227 using Expanded Form.
850.
Solve 764 - 317 using Expanded Form.
447.
Solve 255 + 354 using Base 10 Blocks.
609.
Solve 834 - 317 using Base 10 Blocks.
517.
Create a number line to solve 920 - 315.
605.
Solve 458 + 161 using Expanded Form.
619.
Solve 429 - 172 using Expanded Form.
257.
Solve 657 + 243 using Base 10 Blocks.
900.
Solve 583 - 247 using Base 10 Blocks.
336.
Create a number line to solve 195 + 215.
410.
Solve 723 + 187 using Expanded Form.
910.
Solve 861 - 385 using Expanded Form.
476.