●Как вычислять % Дано число, например 4500. Его надо уменьшить на %, допустим 30%. Чтобы вычислить процент, надо число умножить на этот процент и разделить на 100. Пример: 4500×30÷100=1350 Это сам процент 30%=1350 100%=4500 Если надо отнять процент, то надо поставить начальное число и минусовать Пример: 4500- (4500×30÷100)= 3150 Если добавить, надо плюсовать число Пример: 4500+ (4500×30÷100)= 5850
Пример, задача 10.4 1) 4500 - (4500 × 20 ÷ 100) = 3600 рублей (снизили на 20%) 2) 3600 + (3600 × 20 ÷ 100) = 4320 рублей (повысили на 20%) ответ: коньки стали стоить 4320 рублей.
Let’s call him N. I don’t know the place he was born but I exactly know that he was born in August. N is my old friend and I look up to him. Whatever he does, he does it well. Whether studying, doing creative works, or any other things. N is not good at sport, but this fault is offset by his good memory and his strength. He can’t do many push-ups, but he can throw a ball really far. To tell the truth, sometimes I envy him. But as N is my role model I try not to think about the envy. I want to be like him. Despite the fact that N always criticizes himself I cant stop admiring him.
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