Mathematics, 13.04.2020 17:00 kiahbryant12

Выполни любые две задачи по своим силам:
Типы задач на проценты:
1)Нахождение процентов от данного числа,
2)Нахождение числа по его процентам.
3)Нахождение процентного отношения двух чисел.
Определите типы задач на проценты, реши:
уровень А
Ne1.Площадь поля 120 га. Зерном засеяно 45% поля. Какую площадь
занимают посевы зерна?
А) 54га В) 45га С)56га Е) 64га
No2 В школьной библиотеке 16% всех книг - для детей. Сколько книг в
школьной библиотеке, если книг для детей в ней 720?
А) 4500 В) 4600 С)4800 E) 4700
уровень в
Ne3. Ученик прочитал 136 страниц, что составляет 22% числа всех страниц
в книге. Сколько страниц в книге?
№4. Слесарь и его ученик изготовили 1100 деталей. Ученик сделал 20%
всех деталей. Сколько деталей сделал ученик?
уровень с
N95. Применяя интенсивную технологию, бригада изготовила сверх плана
200 деталей, перевыполнив тем самым план на 10 %. Сколько деталей
изготовила бригада?
№6. Геологи проделали путь длиной 2450 км. 20% пути они пролетели на
самолете, 50 % пути проплыли в лодках, а остальную часть прошли
пешком. Сколько километров геологи прошли пешком?

Answers: 2

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Выполни любые две задачи по своим силам:
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