Write an addition sentence to match.
432 + 251 = 683 or 251 + 432 = 683
Solve using the chip model.
728
Solve using the vertical way.
231
Solve using the chip model.
279
Solve using the arrow way.
457
Write a subtraction problem to match.
832 - 259 = 573 or 832 - 573 = 259
Solve using the arrow way.
758
Solve using the vertical way.
597