8. Реши задачи. a) На выставке продали ювелирные изделия за 9 дней, по 4 изделия в день. Сколько изделий продали? б) На выставке продали 36 изделий, по 4 изде- лия в день. За сколько дней были проданы эти изделия?
Ответы
Ответ дал:
12
1)
за 9 дней-4 изделия
всего продали-? дней
1)9*4=36(дней)
ответ: изделия продали за 36 дней.
2)
всего продали-36
в день-4 изделия
за сколько д. продали-?д.
1)36:4=9(д)
ответ: всего продали за 9 дней.
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