优质解答
48×55= 142×23= 839÷9=
795÷5= 78×22= 31×81= 97×22 = 57×21= 42×79=
5.5-4.7= 6.6+2.6= 6.4-2.8= 1-0.5=
0.3+0.6 = 1.5+0.9= 3.2-1.5= 5.3+2.7= 8+2.18= 2.7+2.3= 10.8-2.3= 7.2-3.2 =
48×55= 142×23= 839÷9=
795÷5= 78×22= 31×81= 97×22 = 57×21= 42×79=
5.5-4.7= 6.6+2.6= 6.4-2.8= 1-0.5=
0.3+0.6 = 1.5+0.9= 3.2-1.5= 5.3+2.7= 8+2.18= 2.7+2.3= 10.8-2.3= 7.2-3.2 =