Chapter 2: Criss-Cross System of Multiplication Flashcards

Vocabulary flashcards covering the key terms, formulas, and structural rules of the Criss-Cross system of multiplication in Vedic Mathematics.

Urdhva-Tiryak Sutra

A Vedic Mathematics sutra meaning 'vertically and cross-wise', which provides a universal system for multiplying numbers of any combination or length.

Criss-Cross System of Multiplication

The name given to the application of the Urdhva-Tiryak Sutra used to obtain the product of numbers or algebraic expressions in a single line.

Formula for Number of Steps in Criss-Cross Multiplication

The formula $2 \times (\text{number of digits}) - 1$ used to calculate the total number of steps required to multiply two numbers of equal digit length.

Mirror Image Steps

A characteristic of the Criss-Cross system where symmetrical steps—such as the first and last steps, or second and second-to-last steps—are mirror reflections of each other.

Central Step

The independent middle step in the Criss-Cross multiplication sequence that does not have a corresponding mirror image step.

Unequal Digit Multiplication Rule

The method of prepending zeros to the shorter number so both numbers have an equal amount of digits before applying the Criss-Cross multiplication steps.