Multiplication algorithm: Difference between revisions

Revision as of 03:33, 25 July 2024

Revision as of 05:28, 3 September 2024

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====Description====

On paper, write down in one column the numbers you get when you repeatedly halvehave the multiplier, ignoring the remainder; in a column beside it repeatedly double the multiplicand. Cross out each row in which the last digit of the first number is even, and add the remaining numbers in the second column to obtain the product.

====Examples====