How to Use "abacus" with Example Sentences
- 1. In english we call it an abacus .
- 2. The chinese invented the abacus ; india invented the binary and the decimal systems .
- 3. When students mastered the abacus , they developed more confidence in their ability to do math .
- 4. China , which invented the abacus as we know it today , should tell its statisticians to fix theirs .
- 5. Such fine calibrations may date back to the use of the abacus , and to an old chinese convention that assumes a 360-day year for the purpose of reckoning interest payments .