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口算0.07×0.5=33×0.04=0.21+0.9=1÷0.25=2.2x+0.8x=1.4÷0.5=1.55÷0.5=3.2-3.2=0.32=7y-2.3y=

题目详情
口算
0.07×0.5=33×0.04=0.21+0.9=1÷0.25=
2.2x+0.8x=1.4÷0.5=1.55÷0.5=3.2-3.2=
0.32=7y-2.3y=
▼优质解答
答案和解析
0.07×0.5=0.03533×0.04=1.320.21+0.9=1.111÷0.25=4
2.2x+0.8x=3x1.4÷0.5=2.81.55÷0.5=3.13.2-3.2=0
0.32=0.097y-2.3y=4.7y