口算．0.51÷0.03= 32.8+19= 5.2÷0.13=l.6×0.4= 3.2×6= 1÷5=6÷1.5= 0.87﹣0.49=
直接写出计算结果．×= 6×= 1.25×80%= 3.14×0.5×4=×15=+=÷= 0.56+0.34=×2÷×2=﹣=
根据算式涂一涂．×；×．
80个米相加是多少米？
直接写出得数．×=×=×=×= 5×=×21=×=×=×=×=
直接写出得数． 8π= 1.4﹣= 1﹣﹣﹣= 0.33+0.77= 10××= 18.84÷3.14=（+）×6=
×
= 6×
= 1.25×80%= 3.14×0.5×4=
×15=
+
÷
= 0.56+0.34=
×2÷
×
；
×
．
米相加是多少米？
×
=
×
×
=
×
= 5×
=
×21=
×
=
×
=
×
=
×
=
= 1﹣
﹣
﹣
= 0.33+0.77=
×
= 18.84÷3.14=（
+
）×6=
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