<span>1м 3дм 4см 6мм = 10 дм + 3 дм + 0,4 дм + 0,06 дм = 13дм + 0,46дм = 13,46 дм.</span>
228*2=456
505-277=278
456/278=1.64028777(если округлить то будет 2)
3.
а) 5\6 - 3\4 = 5*2\6*2 - 3*3\4*3 = 10\12 - 9\12 = 1\12
б) 9\14 + 8\21 = 9*3\14*3 + 8*2\21*2 = 27+18\42 = 45\42 = 1 1\14
P.S. МНЕ ЛЕНЬ
№1.Как найти неизвестное слагаемое, уменьшаемое, вычитаемое?Найди х.а.х+0,9=1,5б.2-х=0,3в.х-3,8=1,4г.-0,5+х=3,4д.0,8-х=1,3е.-0,8
Гермине [2]
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