Sub-Sūtra 13 of 13

Ekanyūnena

By one less (sub-form)

Variant of Sutra 14 for general all-9 multiplication.

When to use

Multiplications with 9, 99, 999 patterns.

How it works

Same idea as Sutra 14: subtract 1 from N, append complement.

Memory formula

One less is the anchor: reduce first, then complete the remaining part.

Worked examples

Problem 1

8 × 9

0/3

Get a personal walkthrough of Ekanyūnena with examples tuned to your question.