ready reckoner

noun

1. reckoner ( def 2 ).

ready reckoner

noun

1. a table of numbers used to facilitate simple calculations, esp one for applying rates of discount, interest, charging, etc, to different sums

Word History and Origins

Origin of ready reckoner¹

First recorded in 1750–60

Example Sentences

"It is a ready reckoner to understand where we stand and the impact of land degradation on agricultural productivity."

From Reuters

“Just so, your honour; I see your honour is a ready reckoner.”

From Project Gutenberg

A few feet away, his father was carefully calculating, with the aid of a ready reckoner, the compound interest on a little pile of bills of exchange which lay before him.

From Project Gutenberg

On large matters he went right by the very largeness of his mind; but in small matters he suffered from the lack of any logical test and ready reckoner.

From Project Gutenberg

It looks like a page out of a ready reckoner or a mathematician's nightmare.

From Project Gutenberg