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Page 19.

9. 63 dollars 25 cents ry mills.
10. 753 dollars 25 cents.
11. $9.
13. $105.

15. $39.375.
12. $10.50. 14. $1.125. 16. $55.65.
17. Cost $483.136; sold for $640.328.
18. 60 cts., 70, 80, 90, 100, 110, 120.
19. 84 cts., 96, 108, 120, 132, 144.
21. 44d., 54, 57, 67, 64, 71, 73, 81, 82, 83.
22. 2128., 2*, 211, 315, 312, 432, 482, 512

23. £13, 2, 218, 3, 320, 311, 316, 4, 43, 420, 420, 5,5%, 51%, 6.

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1. 3359 far.

12. 1 lb. 2 3 03 10 2 gr. 2. 3068 pence.

13. 741402 inches. 3. 1682 pence.

14. 4 lea. O mi. 5 fur. 12 4. £2 9s. Od. 2 far.

rd. 4 yd. 1 ft. 4 in. 5. £2 58. 3d.

15. 1774 in. 6. £36 11s.

16. 135 inches. 7 1705577 drams.

17. 180 inches. 8. 1 T. 6 cwt. 1 qr. 1 lb. 11 oz. 18. 162 inches.

182416 sq.

in. 11 lb. 2 oz. ( pwt. 4 gr.

20. 161940 cu. in. 11.

21. 2 cords.

19.

9. 32871 gr. 10.

14690 gr.

Page 90.

23. 633 pt.

22. 831 gills.

Page 93. 56. 1440 yd.; 1200 yd.; 960 yd.; 640 yd. ; 480 yd.; 384 yd. ; 320 yd. ; 274 yd. 57. Proceeds of flour, $3312.50.

Number of yards, 3785%.

RATIO.

.60

Page 103.

2 9. $$.40 x = $1.20 per bushel, then $1.20 x 36 =

.60

19 $10.50; $7.20 x = $11.40; $28.50; $38.00; $57; $47; $70.50; $117; $128.10.

10. $11.871; $12.817; $194; $461; $1191; $157; $1884; $3491.

11. $260; $310; $500; $525; $690; $735; $780; $825; $1510; $1995.

12. $371; $25; $121 ; $10; $20; $30; $40; $60; $70.

13. $146.

Page 104.

15. $18.75, $22.50.

14. $9.

Page 105.

13. $49.50.

ry. 15 barrels..
8. 15 days.

11. $3500.
12. $42.60.

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Page 147.Ex. 6. $1000. Ex. %. $1000. Page 149,-Ex. 5. 2597937 francs. Ex. 6. $5000. Page 150.- Ex. 10. $5000.

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Page 17. To find a number greater than any given in the table.

=

As R? x R = R4, hence, the product of any two tabular numbers will be the tabular number for the sum of the years corresponding to those numbers.

Thus, tab. No. opp. 20 years x tab. No. 20 x tab. No. 10 = tab. No. opp. 50 years.

Tab. No. of 20 x tab. No. 9 = tab. No. 29, etc.

Page 180.-Ex. 5. $1000.

THE METRIC SYSTEM.

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The Metric System is a decimal system of measures and weights used in France and many other countries. It corresponds to our decimal system and is likely to become general, as the benefits of a general system are obvious.

The units of this system are the Metre, the Are (pronounced air), the Litre (pronounced leetur), the Gram, and the Stere (pronounced Stare).

The unit holds a central position as in abstract numbers, and the orders to the left increase by tens, and are designated by the prefixes deca, hecto, kilo, and myria, whilst the decimals to the right diminish by tenths, hundredths, etc., and are designated by the prefixes deci, centi, and milli.

The unit of length is the Metre from which the name of the system is derived, and its length is 10000000 of an arc of 90 degrees or 4 the circumference of the earth, and equals 39.37079 inches.

MEASURES OF LENGTH.

10 millimetres equal 1 centimetre 10 centimetres 1 decimetre

.3937079
3.937079

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10 decimetres

1 metre

3 ft. 3.37079 in. 10 metres

1 decametre 393.7079 10 decametres 1 hectometre 3937.079 10 hectometres 1 kil'ometre 39370.79 10 kilometres 1 myr'iametre = 393707.9

The kilometre is the unit for expressing long distances.

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