直接写得数0.4+0.06= 8.6-7= 1+0.45= 7×0.9= 0.78×0.1= 32.1×0.2= 1.8-0.5= 3.2÷32= 0.36÷0.09= 4.3
直接写得数0.4+0.06=8.6-7=1+0.45=7×0.9=0.78×0.1=32.1×0.2=1.8-0.5=3.2÷32=0.36÷0.09=4.3-2.3=9...
直接写得数0.4+0.06= 8.6-7= 1+0.45= 7×0.9= 0.78×0.1= 32.1×0.2= 1.8-0.5= 3.2÷32= 0.36÷0.09= 4.3-2.3= 9.6÷0.3= 3.2+4.7= 2÷0.5= 0.1×0.1= 21÷0.3= 2.8+8=
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