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WEIGHT. 24 grains (gr.) make 1 pennyweight, 20 pennyweights " 1 ounce, oz 12 ounces " 1 pound, Ib. 1. How many grains in 2 pennyweights ? in 4 ? 2.
The Progressive Intellectual Arithmetic, on the Inductive Plan: Being a ... - Page 47
by Horatio Nelson Robinson - 1859

## Robinson's New Primary Arithmetic

Horatio Nelson Robinson - Arithmetic - 1892 - 88 pages
...of corn, at 15 cents a peck? LESSON IV. TROY WEIGHT. 24 grains (gr.) make 1 pennyweight, marked pwt. 20 pennyweights " 1 ounce, " oz. 12 ounces " 1 pound, " Ib. 1. How many grains in 10 pennyweights? SOLUTION. — In 1 pennyweight there are 24 grains ; in 10 pennyweights there are...

## Dubbs' Complete Mental Arithmetic: A Volume of Carefully Graded Exercises ...

Eugene L. Dubbs - Arithmetic - 1893 - 244 pages
...barrel ? LESSON V. Troy Weight. 24 grains (gr.) - make 1 pennyweight, marked pwt. 20 pennyweights " r ounce, " oz. 12 ounces - - " 1 pound, " Ib. 1. How many grains in 3 pwt. ? in5? in 7? in 10? 2. How many pennyweights in 4 oz. ? in 6 ? in 12 ? in 15? 3. How many ounces...

## A Mental Arithmetic

George Albert Wentworth - Mental arithmetic - 1895 - 200 pages
...used in weighing gold, silver, and precious stones. TABLE. 24 grains (grs.) = 1 pennyweight (dwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (Ib.). 1. How many spoons weighing 20 pennyweights each can be made from 10 ounces of silver ? From 1 pound ? 2. If an...

## The Model Mental Arithmetic for Public and Private Schools

C. F. R. Bellows - Mental arithmetic - 1898 - 150 pages
...— Grains, pennyweights, ounces, pounds. RELATIONS OF UNITS. 24 grains (gr.) = 1 pennyweight, pwt. 20 pennyweights = 1 ounce, oz. 12 ounces = 1 pound, Ib. 1. How many grains in 2 pennyweights? in 3 pwt.? 2. How many pennyweights in 72 gr. ? in 96 gr. ? 3. How many pennyweights in 3 oz. ? in 5 oz....