Exercice 4:
215 =
200 + 10 + 5
300 + 60 + 7 =
367
538 =
400 + 80 + 1 =
173 =
700 + 50 + 9 =
926 =
600 + 40 + 3 =
634 =
200 + 20 + 2 =
