The abbucus helps people who can't use modern technology to count (add, subtract, multiply and divide).
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The Abacus
They used the abacus
Abacus basically teaches the kids the tricks to solve the numbers and the mathematical problems smoothly and quickly. Best Brains learning center can help the kids absorb the abacus skills in the most satisfying and sustainable way. Our certified teacher will helps your kids to improve their Abacus Math skill very clearly. For more info, contact us at 469-356-0000
Abacus and Calculator and are same to the extent that both are used for doing calculations. One learnt how to use, these can help you to do calculations really fast. - Neeraj Sharma
How did the abacus occur?