Septonum

Every day, solve 7 calculations. For each one, you get 6 numbers and a target number between 101 and 999. Your goal is to get as close as possible by combining the given numbers with 4 operations (+, -, × and ÷).

You have two types of numbers:

Small numbers (green): 1 to 10
Large numbers (gold): 25, 50, 75 or 100

Each number can only be used once. Intermediate results can be reused.

1. Click a number to select it
2. Choose an operation (+, −, ×, ÷)
3. Click a second number
4. The result appears and can be reused

Only positive integers are allowed. Divisions must be exact.

You have 2 minutes per calculation. When time runs out, your best intermediate result is automatically submitted. You can also submit manually at any time if you can't find the exact match.

Proximity — up to 80 pts:

Speed — up to 20 pts (if proximity > 0):

Create or join a room to compare scores with friends. Simply share the room code to invite them. No registration needed to play solo.