Вопрос школьника по предмету Математика
Маша и Оля купили три десятка пуговиц.На халат они пришили одну третью часть пуговци.Сколько пуговиц осталось для следующих моделей?
Ответ учителя по предмету Математика
Три десятка это 30 а одна третья это 30:3 выходит 10 пуговец на одну модель 30-10=20 пуговец на другие модели
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ДАЮ 30 БАЛЛОВ!!!!!!!!!!!!!!
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