
Периметр прямоугольника.
Presentation
•
Mathematics
•
2nd Grade
•
Hard
Вадим тащер
Used 3+ times
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9 Slides • 0 Questions
1
Периметр прямоугольника.
By Вадим тащер
2
Периметр -это:
а) длина одной стороны.
б) длина двух сторон.
в) сумма длин всех сторон.
Выбери верный ответ.
3
1.
2.
Под какими номерами изображены прямоугольники?
3.
4.
5.
6.
4
Назовите основные свойства прямоугольника.
5
Найдите периметр прямоугольника
5 см
3 см
6
1 способ:
5+3+5+3=16 (см)
2 способ:
5х2+3х2 =16(см)
3 способ:
(5+3)х2=16(см)
Проверка:
7
Самостоятельная работа:
Постройте прямоугольник со сторонами 4см и 3 см. Найдите его периметр одним из трёх способов.
8
Проверка:
1) 4+3+4+3=14(см)
2) 4х2+3х2=14 (см)
3) (4+3)х2=14(см)
9
Оцените свою работу:
Периметр прямоугольника.
By Вадим тащер
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