Abacus for Kids for Android

11 things about Abacus for Kids

1. When 5 beads are counted in the lower deck, the result is "carried" to the upper deck; after both beads in the upper deck are counted, the result (10) is then carried to the left-most adjacent column.

2. When the data is 1010100, continue to subtract 16835 from it until it reaches 0.

3. There are two beads on each rod in the upper deck and five beads each in the bottom for both decimal and hexadecimal computation.

4. When the data is 62500, continue to subtract 625 from it until it reaches 0.

5. When the data is 9990, continue to subtract 185 from it until it reaches 0.

6. The abacus was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere.

7. When the data is 999, continue to subtract 37 from it until it reaches 0.

8. The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes.

9. 1.4. Addition and subtraction of the const 16835: add 16835 for 3 times to get 50505, and another 3 times to get 101010, and so on.

10. The application will show abacus formulas to help the user after the user has beaded in the first number.

11. Each bead in the upper deck has a value of 5; each bead in the lower deck has a value of 1.