2分和5分的硬币共30枚，价值9角9分，2分和5分的硬币各有多少枚？
+=÷= 12.6﹣6.06= 201+75=×=
直接写出得数：﹣= 6×= 0÷=×=+=÷=×=×=
+=﹣=+=+= 1+= 2﹣1=﹣= 3﹣= 1+2=×= 7﹣4=×13=×4= 8×=÷= 5÷=÷8= 8÷= 3÷=÷=
直接写得数． 1﹣+= 1.25×0.8= 72÷= 10.6﹣5.62= 0.33= 11.1÷0.3=×= 4.1×25+3.9×25=
直接写出得数．+=÷= 3﹣1.95=×= 6.3÷0.07=÷6= 0÷=﹣=+3÷=×﹣0.75×=
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+
=
÷
= 12.6﹣6.06= 201+75=
×
=
﹣
= 6×
= 0÷
=
×
=
+
=
÷
=
×
=
×
=
+
=
﹣
=
+
=
+
=
+
= 2
﹣1
=
﹣
= 3
﹣
=
+2
=
= 7﹣4
=
×13
=
×4= 8×
=
÷
= 5÷
=
÷8= 8÷
= 3
÷
=
÷
=
+
= 1.25×0.8= 72÷
= 10.6﹣5.62=
×
= 4.1×25+3.9×25=
+
=
÷
= 3﹣1.95=
×
= 6.3÷0.07=
÷6= 0÷
=
﹣
=
+3÷
=
﹣0.75×