Category | Price | Seller | Device |
---|---|---|---|
Education | Free | Piotr Nowacki |
And do not get nervous if you make a mistake so close to finish line :)
Easy: 1-20 ( Add / Subtract )
Medium: 1-100 ( Add / Subtract / Multiply / Divide)
Hard: 1-9999 ( Add / Subtract / Multiply / Divide)