Question

Ajutorrr.. In bazinul de inot s-au pus timp de 5 zile, cate 26 hl de apa in fiecare zi, iar in urmatoarele 5 zile cate 50 dal. Cati kilolitri de apa s-au pus in bazin? (REZOLVA IN DOUA MODURI). Ptr clasa a 4 a

Answer 1

prima metoda

26×5=130hl

50×5=250dal

_____________

130hl-13 kilolitri

250dal-2,5kilolitri

_____________

13+2,5=15,5kilolitri

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a doua metoda

_____________

130hl-13 kilolitri

250dal-2,5kilolitri

_______________

5×(13+2,5)=15,5 kilolitri