8 szkoły podstawowej

Matematyka. Kalendarz ósmoklasisty

Obliczamy ile wynosi objętość dużego sześcianu o krawędzi długości 1 m.&nbsp; 1 m=100 cm &nbsp; Zatem:&nbsp;&nbsp;

Rozkładamy liczbę 450 000 na czynniki pierwsze.&nbsp;

Każdą z podanych liczb zapisujemy w jak najprostszej postaci. Podstawa każdej z potęg musi wynosić 3.&nbsp; A. 334−333=333⋅3−333=333(3−1)=333⋅2 &gt; 333 &nbsp;&nbsp;

Obliczamy wartość każdego z podanych wyrażeń.&nbsp; A. 614⋅63619​=614+3619​=617619​=619−17=62 &nbsp;

Kwadrat ABCD ma pole 2 razy większe od pola kwadratu EFGH.&nbsp; PABCD​=2⋅PEFGH​ &nbsp; Bok kwadratu ABCD ma długość 6.&nbsp;

Podaną liczbę zapisujemy w jak najprostszej postaci wykonując odpowiednie działania na pierwiastkach.&nbsp;

Liczbę 5√180 zapisujemy tak, aby pod pierwiastkiem znajdowała się liczba 5.&nbsp; Wykorzystujemy do tego odpowiednie własności działań na pierwiastkach.&nbsp;

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