In this video , explained how to use small friend formula +3=+5-2 in simplest and easy method. For more videos please subscribe and follow .

The Japanese abacus, also known as Soroban, is a type of abacus that originated in Japan. It is a wooden frame with beads on rods, with one row on top and four rows on the bottom. The beads on the top row represent the number 5, and the beads on the bottom represent the numbers 1 to 4. Here are some common Japanese abacus techniques:

Addition: To add two numbers on a Japanese abacus, move the beads on each rod to represent the individual digits, and then slide them together. The carry-over operation can be performed by moving a single bead on the next upper rod if the sum of the lower rods is equal to or greater than five.
Subtraction: To subtract two numbers on a Japanese abacus, move the beads on each rod to represent the individual digits, and then slide the lower number away from the higher number. Borrowing can be performed by moving one bead from the next upper rod if the minuend is less than the subtrahend.
Multiplication: To multiply two numbers on a Japanese abacus, use a specific technique called "multiplication and shifting." First, multiply the individual digits of the two numbers and record the product on a separate row of the abacus. Then, shift the beads to the left, and add the products from the next column to the current row. Repeat this process until all the columns have been added, and the result is in the final row.
Division: To divide two numbers on a Japanese abacus, use a specific technique called "division and shifting." First, move the beads on the rods to represent the dividend and divisor. Then, repeatedly subtract the divisor from the dividend and move the beads on the quotient rod to represent the number of times the divisor can be subtracted. Finally, the beads on the quotient rod represent the quotient of the division.

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