## Task 6

Calculate the numbers.

- A is four times the smallest three-digit number,
- B is half of the smallest four-digit number,
- C is the sum of D and E,
- D is $\mathrm{B}$ minus $\mathrm{A}$,
- E is the sum of B and D.
smallest three-digit number 100, i.e., $\mathrm{A}=400$, analogously $\mathrm{B}=500$. Therefore, $\mathrm{D}=100, \mathrm{E}=600, \mathrm{C}=700$

### 12.18 Further Problems, Grade 3

The following problems cannot yet be assigned to a specific Olympiad year.