Final Cover - For Printing

j) Clear the first abacus. Set the denominator values as 6×13. The answer is 78.

k) Clear the denominators of the second abacus and set 78 in the denominator

side. Now you are left with 5177 in the numerator side and 78 in the denominator

side.

l) Clear the first abacus. Set 5177 as dividend and 78 as the divisor. Divide the

number. Normal division procedures have to be followed. You will get 66 as the

quotient and 29 as the remainder.

III. MULTIPLICATION USING ABACUS AND SLATE AND STYLUS :

Consider the previous example itself:

1. Make the fractions into improper fractions using the abacus.


2. Write the values in Braille sheet. This is for your reference (child’s reference).


3. Cancellation can be made, if any. While using Braille you may not set the
   number in the abacus for making the cancellations. This can be done in memory
   also.


4. Now read the values of the numerators and denominators which are written.


5. Multiply the numerators using the abacus.


6. Write your answer ; clear the abacus now.


7. Multiply the denominators using the abacus.


8. Write your answer ; clear the abacus now.


9. Set the value of numerator as dividend and the value of denominator as divisor;
   divide now.


10. Write the answer – the quotient and the remainder.