Предмет: Математика, автор: muroslavakindrat

помогите пожалуйста мне очень нужна помощь

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Автор ответа: xERISx

0

При умножении или делении двух чисел одинаковых знаков, получается положительное число. При умножении или делении двух чисел разных знаков получается отрицательное число.

а) -8 · 9 = -72 - умножение отрицательного и положительного числа, поэтому результат отрицательный.

Чтобы умножить десятичную дробь на 100, можно подвинуть запятую в десятичной дроби вправо на две цифры.

б) (-8,35) · (-100) = 835 - умножение двух отрицательных чисел, поэтому результат положительный.

в) -36 : (-4) = 9 - деление двух отрицательных чисел, поэтому результат положительный.

Ответ: а) -72; б) 835; в) 9.

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