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Questions for Exercise, · · · ·

Reduction, - - .

of Currencies, do. of Coin,

. 82,

Rule of Three Direct, do. Inverse, .

.. 90,99

Double, . .

Rules for reducing the different currencies of the several United ?

States, also Canada and Nova Scotia, cach to the par

of all others, . . . . ..
Application of the preceding, - - .

Short Practical, for calculating Interest, ..

114

for casting Interest al 6 per cent, - .

203

- for finding the contents of Superfices and Solids, - 208

- to reduce the currencies of the different States to Fcdc-

ral Money, - - - - - - - - - 206
Rebaté, a short method of finding the, of any given sum, for
months and days, ..

204

Subtraction, Simple, -

28

-- Compound, - • -

Table, Numeration and Pence,

Addition, Subtraction, and Multiplication,
of Weight and Measure, - -

of Time and Motion, . .
- showing the number of days from any day of one month
to the same day in any other monthi, -

TEC
showing the amount of 1l, or 1 dollar, at 5 and 6 per

cent. Compound Interest, for 20 years, - - .. 291

showing the amount of 11. annuity, forborne for 31 years

or under, at 5 and 6 per cent. Compound Interest, 221

showing the present worth of 1l. annuity, for 31 years,

at 5 and 6 per cent. Compound Interest, • - ..

of Cents, answering to the currencies of the United

States, with Sterling, &c. -

showing the value of Fcdcral Money in other currencies, 225

Tare and Tret, - - - -

103

Useful Forms in transacting business,

226

Weights of several pieces of English, Portuguese, and French

Gold Coins, in dollars, cents, and mills, .

222

of English and Portuguese Gold,

223

of French and Spanish Gold, do. do. 229.

16

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DABOLL'S

SCHOOLMASTER'S ASSISTANT.

ARITHMETICAL TABLES.

Numeration Table.

Pence Table.

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Hundreds of Mwons.
coco Tens of Millions.

O Millions.
covo Hundreds of Thousands.
co voor Tens of Thousands.

co voor A Thousands.
On voor A co Hundreds.

P.
cover w wore Tens.
ovo CT A COO - Units.

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108 120 132

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To learn this Table : Find your multiplier in the lett hand column, and the multiplicand a-top, and in the com. mon angle of meeting, or against your multiplier, along as the right hand, and under your multiplicand, you will fin the product, or answer.

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2. Troy Weight. 24 grains (gr.) make | penny-weight, marked prot. 20 penny-weights, 1 ounce,

oz. 12 ounces,

1 pound,

3. Avoirdupois Weight.
16 drams (dr.) make 1 ounce,
16 ounces,

1 pound,
28 pounds, 1 quarter of a hundred weight,
4 quarters,

1 hundred weight, cit.
20 hundred weight,

1 tun.
By this weight are weighed all coarse and drossy goods,
grocery warcs, and all metals except gold and silver.

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4. Apothecaries Weight. , 70 grains (gr.) make 1 scruple, 3 scruples,

1 dram, 8 drams,

1 ounce,
12 ounces,

1 pound,
Apothecaries use this weight in compounding their mc-
dicines.

5. Cloth Mleasure.
4 nails (na.) make 1 quarter of a yard, qr.
4 quarters,

1 yard,
3 quarters,

1 Ell Flemish, E. FI. 5 quarters,

1 Ell English, E. E. O quarters,

| Ell French,

E, Free

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6. Dry Measure. o pints. (ot.) make 1 quart, . 8 quarts,

: 1 peck, 4 pecks,

1 bushel, This measure is applied to grain, beans, flax-seou, salt nats, oysters, coal, &c.

I

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All brandies, spirits, mead, vinegar, oil, &c. are measu ed by wine measure. Note. 231 solid inches, make a gal

1011.

8. Long Measure. :3 barley corns (b. c.) make 1 inch, marked 12 inches,

I foot, 33 feet,

| yard,

yd. 5 yards,

i rod, pole, or perch, rd. 10 rods,

I furlong,

fur, 8 furlongs,

I mile,

m. :3 iniles,

I leaguc,

lea. 69 statute miles,

I degree, on the earth. 360 degrees, the circumference of the earth.

The use of long meature is to measure the distance of places, or any other thing, where length is considered, with2014 regard to breadth.

N. B. In measuring the height of horses, 4 inches mako I hand. In measuring depths, 6 feet make 1 fathom or French toise. Distances are measured by a chain, four rods long, containing one hundred links.

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