| ID | PROBLEM | DIFFICULTY | SOLVED | ||
|---|---|---|---|---|---|
| M021 | Digits of a two-digit number | Arithmetic | Easy | 4/5 | |
| M022 | Reverse a three-digit number | Arithmetic | Easy | 4/4 | |
| M023 | Thousands digit | Arithmetic | Easy | 4/4 | |
| M024 | Day of the week | Arithmetic | Easy | 3/3 | |
| M025 | Packing squares | Arithmetic | Easy | 4/4 | |
| M026 | Century of a year | Arithmetic | Easy | 4/4 | |
| M027 | Division with remainder | Arithmetic | Medium | 4/4 | |
| M028 | Rounding | Arithmetic | Medium | 4/4 | |
| M029 | Quadratic equation | Arithmetic | Medium | 2/2 | |
| M030 | Rectangle from two corners | Arithmetic | Easy | 4/4 |
