Ответ:
1) 17500.
2) 1680.
3) 4940.
Пошаговое объяснение:
1) 25•20•5•7= (25•7)(20•5) = 175•100 = 17500.
2) 42•25+ 15•42=42•,(25+15) = 42•40 = 1680.
3) (200-4)*15 = 200•25 - 4•15 = 5000 - 60 = 4940.
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Ответ:
1) 17500.
2) 1680.
3) 4940.
Пошаговое объяснение:
1) 25•20•5•7= (25•7)(20•5) = 175•100 = 17500.
2) 42•25+ 15•42=42•,(25+15) = 42•40 = 1680.
3) (200-4)*15 = 200•25 - 4•15 = 5000 - 60 = 4940.