What each fast-calculation method is, how it works and how it helps
Learn to add numbers up to 5! This is the very first soroban rule — the secret to fast finger movement starts here!
The most important soroban rule! Know the friends of 10, and adding or subtracting any number becomes easy!
Adding numbers that go past 10! On the soroban, this means "carrying" — sliding a bead to the left!
The Big Brother method — adding through 5! Add 5, then subtract the extra. The secret of the 5-bead!
The "through 10" technique! First reach 10, then add the rest. A clever method!
A magical way to multiply any number by 11! Place digits side by side and add neighbors — done!
The secret method for multiplying by 9! Subtract 1 from the digit, then fill to 9. Fast and accurate!
The fast way to multiply by 12! Double the digit and add its neighbor. Simple!
An ancient Indian method for multiplying numbers near 100! A 3000-year-old technique that still works!
Multiply large numbers near 1000 using the Vedic method! 3-digit numbers — no problem!
Times tables — the foundation of math power! Know them and division becomes easy too!
Times tables — the foundation of math power! Know them and division becomes easy too!
Division exercises! Learn to split numbers into equal parts!
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