直接写出得数: (﹣13)+(﹣8)= 19.3﹣2.7= ×(﹣)= 225+475= 15+(﹣22)= (﹣14)÷2=
心算.2.3+2.2= 5.62﹣2.02= 0.25+1.8=9.5﹣1.3= 1.3﹣0.8= 3.5﹣0.5=1.95÷3.05= 2.3+1.6= 5.31﹣2.01=
计算.
算一算,填一填.0.9+0.6= 15.4+2.97= 5.94+10.7=10﹣3.14= 10.2﹣8.75= 11.65﹣7.39=
65.4﹣11.06+3.4920﹣﹣÷36×(+﹣)÷[(﹣)÷].