## Aufgabe 1

| a) | $380+390$ | $2600-800$ | $980-650$ |
| :--- | :--- | :--- | :--- |
| b) | $60: 3$ | $720: 8$ | $56: 7$ |
| c) | $400 \cdot 7$ | $50 \cdot 8$ | $6 \cdot 9$ |
| d) | $1647-432$ | $4853-1591$ | $3846-2733$ |




a) $770,1800,330$; b) $20,90,8$; c) $4900,400,54$; d) $1215,3262,1113$

