вычислите -
№2 а) 3,5 +0,45 ; б) 2,6- 4,8 ; в) (-2,4)*(-3,5) ; г) 0,54: 0,009
№3 а)3 целых 2/3 +1,1 ; б) 2/5 - 0,3 ; в)1 целая 3/11 * (-2,2) ; г) (-0,9) : 2 целых 1/4
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