口算题 25.8+0.42= 0.4×0.004= 125×8= 287+179+﹣187= 999+99+3= （﹣0.02）÷1+=
10-4= 10-6= 4+6=
5+2= 7-5= 7-2=
4+1= 5-1= 5-4=
2+6= 8-6= 3+3= 6-3=
1+5= 6-1= 10-5= 5+5=
×8=
﹣0.02）÷1
+
=
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