Опишите алгоритм сравнения дробей с разными знаменателями сравните дроби и запишите результат с помощью знаков больше, меньше или равно - 7/8 и3/4 ,6/25 и 1/4 , 11/6 и 7/4 , 3/4 и 9/12, 7/5 и 3/2, 5/6 и 5/8, 3/10 и 7/12, 2/3 и 3/8, 25/100 и 1/4

Лебедев Дмитрий Сергеевич

Учитель математики

Проверено учителем

Результаты сравнения: 78>34seven-eighths is greater than three-fourths , 625<146 over 25 end-fraction is less than one-fourth , 116>74eleven-sixths is greater than seven-fourths , 34=912three-fourths equals 9 over 12 end-fraction , 75<32seven-fifths is less than three-halves , 56>58five-sixths is greater than five-eighths , 310<712three-tenths is less than 7 over 12 end-fraction , 23>38two-thirds is greater than three-eighths , 25100=1425 over 100 end-fraction equals one-fourth . ️ Шаг 1: Алгоритм сравнения дробей с разными знаменателями Для того чтобы сравнить две дроби с разными знаменателями, необходимо выполнить следующие действия:

  1. Найти наименьший общий знаменатель (НОЗ) — это наименьшее общее кратное знаменателей данных дробей.
  2. Вычислить дополнительные множители для каждой дроби, разделив НОЗ на знаменатель каждой дроби.
  3. Умножить числитель и знаменатель каждой дроби на соответствующий дополнительный множитель.
  4. Сравнить полученные дроби с одинаковыми знаменателями: из двух дробей с равными знаменателями больше та, у которой числитель больше.

️ Шаг 2: Применение алгоритма к заданным парам

  1. 78seven-eighths и 34three-fourths : НОЗ = 88. 34=3242=68three-fourths equals the fraction with numerator 3 center dot 2 and denominator 4 center dot 2 end-fraction equals six-eighths . Так как 7>67 is greater than 6, то 78>34seven-eighths is greater than three-fourths . 6256 over 25 end-fraction и 14one-fourth : НОЗ = 100100. 64100=24100the fraction with numerator 6 center dot 4 and denominator 100 end-fraction equals 24 over 100 end-fraction и 125100=25100the fraction with numerator 1 center dot 25 and denominator 100 end-fraction equals 25 over 100 end-fraction . Так как 24<2524 is less than 25, то 625<146 over 25 end-fraction is less than one-fourth . 116eleven-sixths и 74seven-fourths : НОЗ = 1212. 11212=2212the fraction with numerator 11 center dot 2 and denominator 12 end-fraction equals 22 over 12 end-fraction и 7312=2112the fraction with numerator 7 center dot 3 and denominator 12 end-fraction equals 21 over 12 end-fraction . Так как 22>2122 is greater than 21, то 116>74eleven-sixths is greater than seven-fourths . 34three-fourths и 9129 over 12 end-fraction : НОЗ = 1212. 3312=912the fraction with numerator 3 center dot 3 and denominator 12 end-fraction equals 9 over 12 end-fraction . Так как 9=99 equals 9, то 34=912three-fourths equals 9 over 12 end-fraction . 75seven-fifths и 32three-halves : НОЗ = 1010. 7210=1410the fraction with numerator 7 center dot 2 and denominator 10 end-fraction equals fourteen-tenths и 3510=1510the fraction with numerator 3 center dot 5 and denominator 10 end-fraction equals fifteen-tenths . Так как 14<1514 is less than 15, то 75<32seven-fifths is less than three-halves . 56five-sixths и 58five-eighths : НОЗ = 2424. 5424=2024the fraction with numerator 5 center dot 4 and denominator 24 end-fraction equals 20 over 24 end-fraction и 5324=1524the fraction with numerator 5 center dot 3 and denominator 24 end-fraction equals 15 over 24 end-fraction . Так как 20>1520 is greater than 15, то 56>58five-sixths is greater than five-eighths . 310three-tenths и 7127 over 12 end-fraction : НОЗ = 6060. 3660=1860the fraction with numerator 3 center dot 6 and denominator 60 end-fraction equals 18 over 60 end-fraction и 7560=3560the fraction with numerator 7 center dot 5 and denominator 60 end-fraction equals 35 over 60 end-fraction . Так как 18<3518 is less than 35, то 310<712three-tenths is less than 7 over 12 end-fraction . 23two-thirds и 38three-eighths : НОЗ = 2424. 2824=1624the fraction with numerator 2 center dot 8 and denominator 24 end-fraction equals 16 over 24 end-fraction и 3324=924the fraction with numerator 3 center dot 3 and denominator 24 end-fraction equals 9 over 24 end-fraction . Так как 16>916 is greater than 9, то 23>38two-thirds is greater than three-eighths . 2510025 over 100 end-fraction и 14one-fourth : Сократим 2510025 over 100 end-fraction на 2525, получим 14one-fourth . Так как 14=14one-fourth equals one-fourth , то 25100=1425 over 100 end-fraction equals one-fourth .

Ответ: 78>34seven-eighths is greater than three-fourths 625<146 over 25 end-fraction is less than one-fourth 116>74eleven-sixths is greater than seven-fourths 34=912three-fourths equals 9 over 12 end-fraction 75<32seven-fifths is less than three-halves 56>58five-sixths is greater than five-eighths 310<712three-tenths is less than 7 over 12 end-fraction 23>38two-thirds is greater than three-eighths 25100=1425 over 100 end-fraction equals one-fourth Нужно ли вам разобрать более сложные примеры со смешанными числами или отрицательными дробями?

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