Mental Arithmetic, Upon the Inductive Plan: For Beginners

R.S. Davis, 1847 - 72 σελίδες

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Δημοφιλή αποσπάσματα

Σελίδα 47 - TABLE. 10 Mills (m.) = 1 Cent . . ct. 10 Cents = 1 Dime . . d. 10 Dimes = 1 Dollar . \$. 10 Dollars = 1 Eagle . E.
Σελίδα 60 - TABLE. 60 seconds" make 1 minute, marked '. 60 minutes • 1 degree, °. 30 degrees - 1 sign, s. 12 signs or 360° 1 circle, c. " s. a 60 = 1 3600 =60 =1 108000 = 1800 =30 =1 1296000 = 21600 =360 =12 =1 1 . How many seconds in 3 minutes ? In 4 ? In 5 ? 2.
Σελίδα 51 - AVOIRDUPOIS WEIGHT. 16 drams (dr.) make 1 ounce, marked oz. 16 ounces 1 pound ' Ib. 28 pounds 1 quarter qr. 4 quarters 1 hundred weight cwt. 20 hundred weight 1 ton . T.
Σελίδα 53 - 1 Quarter of a yard, " qr. 4 Quarters " 1 Yard, " " yd. 3 Quarters " 1 Ell Flemish, " EF 5 Quarters " 1 Ell English,
Σελίδα 58 - Time. 60 seconds (S.) make 1 minute, marked M. 60 minutes, 1 hour, h. 24 hours, 1 day, d.
Σελίδα 50 - TABLE. 20 Grains (gr.) make 1 Scruple, sc. or 9. 3 Scruples " 1 Dram, dr. or 5 . 8 Drams " 1 Ounce, oz. or § . 12 Ounces
Σελίδα 23 - ... 6 from 6 leaves 0 6 from 7 leaves 1 6 from 8 leaves 2 6 from 9 leaves 3 6 from 10 leaves 4 6 from 11 leaves 6 6 from 12 leaves 6 6 from 13 leaves 7 6 from 14 leaves 8 6 from 15 leaves 9 6 from 16 leaves 10 6 from...
Σελίδα 34 - ARITHMETIC. 36. One hundred eight are how many times 12 ? How many times 9 ? 37. One hundred ten are how many times 11 ? How many times 10 ? 38. One hundred twenty are how many times 12? How many times 10 ? 39. One hundred thirty-two are how many times 11 ? How many times 12 ? 40. One hundred forty-four are how many times 12 ? 41. How many pounds of raisins, at 8 cents a pound, can you buy for 24 cents? For 32 cents? For 40 cents ? For 48 cents ? For 56 cents ? For 72 cents ? For 96 cents ? 42. How...
Σελίδα 48 - Britain. 4 farthings (qr, or far.) make 1 penny, marked d. 12 pence " 1 shilling, " s. 20 shillings " 1 pound, or sovereign, £. 21 shillings " 1 guinea. OBS. 1. It is customary, at the present day, to express farthings in fractions of a penny. Thus, 1 qr. is written ;<!;•_