The Normal Union Arithmetic: Designed as the Primary Part of a Shorter Course in Mental and Written Arithmetic, Μέρος 1Sower, Potts & Company, 1878 - 152 σελίδες |
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Σελίδα 137
... factors of a number ? Ans . Factoring . 13. Name the prime numbers which are factors of 12 ; Of 18 ; Of 20 ; Of 24 ; Of 27 ; Of 36 . 14. What shall we call the factors of numbers when they are prime numbers ? Ans . Prime Factors . 15 ...
... factors of a number ? Ans . Factoring . 13. Name the prime numbers which are factors of 12 ; Of 18 ; Of 20 ; Of 24 ; Of 27 ; Of 36 . 14. What shall we call the factors of numbers when they are prime numbers ? Ans . Prime Factors . 15 ...
Σελίδα 138
... Factors of a composite number are the num- bers which , when multiplied together , will produce it . Thus , 2 and 3 are the factors of 6 , since 3 times 2 are 6 ; 4 and 3 are the factors of 12 , since 4 times 3 are 12 . 4. The Prime Factors ...
... Factors of a composite number are the num- bers which , when multiplied together , will produce it . Thus , 2 and 3 are the factors of 6 , since 3 times 2 are 6 ; 4 and 3 are the factors of 12 , since 4 times 3 are 12 . 4. The Prime Factors ...
Σελίδα 139
... factors , 3 and 4 , is com- position . PRINCIPLE . - Every composite number is equal to the product of its prime factors . WRITTEN EXERCISES . 1. Find the composite number whose factors are 2 , 3 , and 5 . SOLUTION . - To find the ...
... factors , 3 and 4 , is com- position . PRINCIPLE . - Every composite number is equal to the product of its prime factors . WRITTEN EXERCISES . 1. Find the composite number whose factors are 2 , 3 , and 5 . SOLUTION . - To find the ...
Σελίδα 141
... factors of those numbers . OPERATION . 1. Find the greatest common divisor of 24 , 30 , and 42 . SOLUTION . - The factors of 24 are 2 , 3 , and 4 ; the factors of 30 are 2 , 3 , and 5 ; the fac- tors of 42 are 2 , 3 , and 7. The common ...
... factors of those numbers . OPERATION . 1. Find the greatest common divisor of 24 , 30 , and 42 . SOLUTION . - The factors of 24 are 2 , 3 , and 4 ; the factors of 30 are 2 , 3 , and 5 ; the fac- tors of 42 are 2 , 3 , and 7. The common ...
Σελίδα 142
... factors of each number , and no other factors . 1. Find the least common multiple of 6 and 15 . SOLUTION . - The prime factors of 6 are 2 and 3 ; hence the multiple must contain the factors 2 and 3 . OPERATION . 6 = 2X3 15 = 3X5 The ...
... factors of each number , and no other factors . 1. Find the least common multiple of 6 and 15 . SOLUTION . - The prime factors of 6 are 2 and 3 ; hence the multiple must contain the factors 2 and 3 . OPERATION . 6 = 2X3 15 = 3X5 The ...
Συχνά εμφανιζόμενοι όροι και φράσεις
12 cents 12 leaves ADDITION TABLE apples Arithmetic barrel birds bought boys bushels called cents a yard ciphers common fraction composite number contained count backward cows cubic decimal point denominator dimes Dividing for Quotients DIVISION TABLE dollars dozen drams drill the pupils DRY MEASURE eighths equal farthings feet fifths fourths frac gallons gave grains greatest common divisor horses cost hundred hundredths hundredweight improper fraction inches least common multiple less LESSON marbles Mary MEASURE MENTAL EXERCISES miles minuend minus MULTIPLICATION TABLE NOTE.-The teacher OPERATION oranges ounces peaches pence pennyweights pints pounds prime factors quarts reading and writing Reduce remained rods roses RULE.-I sevenths sheep shillings simple numbers sixths slate or blackboard sold SOLUTION.-If SOLUTION.-Three subtraction table subtrahend symbols tenths thirds thousand trees TROY WEIGHT UNITED STATES MONEY write the numbers Write the subtraction writing numbers WRITTEN EXERCISES yards of cloth yards of muslin
Δημοφιλή αποσπάσματα
Σελίδα 107 - Thirty days hath September, April, June, and November ; All the rest have thirty-one, Except the second month alone, Which has but twenty-eight, in fine, Till leap year gives it twenty-nine.
Σελίδα 140 - What is 1 ninth of 1 ? of 2? of 3 ? of 4 ? of 5 ? of 6 ? of 7 ? of 8? of 9 ? of 10 ? of- 11?
Σελίδα 121 - I. Annex ciphers to the numerator, and divide by the denominator. II. Point off as many decimal places in the quotient as there are ciphers used.
Σελίδα 138 - The Greatest Common Divisor of two or more numbers is the greatest number that will exactly divide each of them.
Σελίδα 111 - Multiplying or dividing both terms of a fraction by the same number does not change the value of the fraction.
Σελίδα 124 - Divide as in whole numbers, and point off as many figures for decimals in the quotient as the number of decimal places in the dividend exceeds the number in the divisor.
Σελίδα 138 - Divide the given number by any prime number greater than 1, that is an exact divisor, and the quotient, if composite, in the same manner ; and thus continue until the quotient is prime. The divisors and the last quotient will be the prime factors required.
Σελίδα 101 - Apothecaries' Weight 20 grains (gr.) = 1 scruple (3) 3 scruples = 1 dram (3) 8 drams = 1 ounce ( 3 ) 12 ounces = 1 pound...
Σελίδα 69 - Edwin lost 9 marbles, which is 3 fourths of what he had at first; how many had he at first? 6. Ten is 2 thirds of what number? SOLUTION. — If 2 thirds of some number is 10, 1 third of that number is 1 half of 10, which is 5, and 3 thirds, or the number, arc 3 times 5, or 15.