Chapters 2 and 6: Find the results. In these sections, only the results of the operations are written and the arrow key is pressed.
Chapters 3 and 7: Find transactions. To find the desired number in these sections, the operations are filled in appropriately, the results are written and the arrow key is pressed.
Chapters 4 and 8: Find the numbers. In order to find the desired number in these sections, the numbers are filled in appropriately, the results are written and the arrow key is pressed.
5.,9. And the 9th Section: In these sections, the desired number is tried to be found by using operations and numbers. In Chapters 5 and 10, operations and numbers can be used once. In chapter 9, numbers can be used once, and the same operations can be used as many times as desired.