Practical Mathematics: Instruction Paper, Τόμος 2American school of correspondence, 1912 |
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Σελίδα 34
... cancellation becomes 3ab 16a 36 16a ) 35ab 32ab giving the final form 16 36 * 26 + 16 3b * This must not be expressed as 2b 36 as this would mean 26 × 16 ' 16 ' PROBLEMS FOR PRACTICE Change to improper fractions : Reduce to 34 PRACTICAL ...
... cancellation becomes 3ab 16a 36 16a ) 35ab 32ab giving the final form 16 36 * 26 + 16 3b * This must not be expressed as 2b 36 as this would mean 26 × 16 ' 16 ' PROBLEMS FOR PRACTICE Change to improper fractions : Reduce to 34 PRACTICAL ...
Σελίδα 44
... cancellation will be found . useful . To multiply a fraction by an entire quantity , multiply the numerator of the fraction by the whole number , and write the prod- uct over the denominator , or divide the denominator of the fraction ...
... cancellation will be found . useful . To multiply a fraction by an entire quantity , multiply the numerator of the fraction by the whole number , and write the prod- uct over the denominator , or divide the denominator of the fraction ...
Σελίδα 45
... cancellation 7 2 the result is immediately obtained . 2 13 Х Π 7 2 7 1-31 2 To multiply one fraction by another , multiply together the two numerators and place this product over the product of the two de- nominators , or indicate the ...
... cancellation 7 2 the result is immediately obtained . 2 13 Х Π 7 2 7 1-31 2 To multiply one fraction by another , multiply together the two numerators and place this product over the product of the two de- nominators , or indicate the ...
Σελίδα 47
... cancellation gives 8 8 2 " 9 = 9 9 2 the quotient 9 SOLUTION b . The numerator 8 is divided 8 2 by 4 , giving 2 as the numerator of the = 9 quotient . 1 8 ÷ 4 9 = 9 Note that the use of cancellation in Solution a makes the two methods ...
... cancellation gives 8 8 2 " 9 = 9 9 2 the quotient 9 SOLUTION b . The numerator 8 is divided 8 2 by 4 , giving 2 as the numerator of the = 9 quotient . 1 8 ÷ 4 9 = 9 Note that the use of cancellation in Solution a makes the two methods ...
Σελίδα 48
... cancellation . The f . 4 8 700 = 8 3_41 result is obtained at once . 7 d 2. Divide - by 2 . α Ρ C SOLUTION . The process is exactly the same as used in the preceding examples . d = α d с cd X Ρ с Р a αρ When division involves a mixed ...
... cancellation . The f . 4 8 700 = 8 3_41 result is obtained at once . 7 d 2. Divide - by 2 . α Ρ C SOLUTION . The process is exactly the same as used in the preceding examples . d = α d с cd X Ρ с Р a αρ When division involves a mixed ...
Συχνά εμφανιζόμενοι όροι και φράσεις
acre Avoir Avoirdupois Weight bushel called cancellation ciphers coal contains cubic centimeter cubic feet cubic foot cubic inches cubic measure decimal fractions decimal point denominate number dividend Dividing the numerator division divisor dollars Dry Measure dry quart English system entire quantity equal error example expressed find the least frac fractional units gallons given number gives gram hectoliter higher denomination hundred hundredths improper fraction kilo kilogram kilometer least common denominator length Linear Measure Liquid Quart liter lowest terms metric system millimeters minuend mixed number mixed quantity moving the decimal Multiply the numerator number of places number of units numerator and denominator obtained peck pints pound lb prime factors PROBLEMS FOR PRACTICE quotient Reduce to lowest remainder result short ton SOLUTION Square Measure square mile subtract tenths thousandths tons Troy weight water weighs whole numbers пр
Δημοφιλή αποσπάσματα
Σελίδα 74 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Σελίδα 74 - CUBIC MEASURE 1728 cubic inches (cu. in.) = 1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Σελίδα 75 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Σελίδα 54 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Σελίδα 80 - Time. 60 seconds (sec.) = 1 minute (min.) 60 minutes = 1 hour (hr.) 24...
Σελίδα 81 - TABLE. 4 farthings (far. or qr.) make 1 penny, d. 12 pence " 1 .shilling, s. 20 shillings " 1 pound or sovereign, £ or sov.
Σελίδα 75 - SURVEYORS' SQUARE MEASURE. 197. This measure is used by surveyors in computing the area or contents of land. TABLE. 625 square links (sq. 1.) make 1 pole P. 16 poles " 1 square chain,, .sq. ch. 10 square chains " 1 acre, A. 640 acres " 1 square mile,. ..sq. mi. 36 square miles (6 miles square)
Σελίδα 75 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Σελίδα 77 - In the international metric system the fundamental unit is the meter — the unit of length. From this the units of capacity (liter) and of weight (gram) were derived. All other units are the decimal subdivisions or multiples of these. These three units are simply related eg, for all practical purposes 1 cubic decimeter equals 1 liter and 1 liter of water weighs 1 kilogram. The metric tables are formed by combining the words
Σελίδα 74 - A pile of wood 8 feet long, 4 feet wide, and 4 feet high, contains 1 cord; and a cord foot is 1 foot in length of such a pile.