直接写得数﹣= ×= += 1.03+0.07=1÷0.4= ×25%= 0.05×100= 0.6：0.36=
，，，，，，，．
﹣=+= 1﹣=+= 1﹣=+=
填一填．
直接写得数．+=﹣= 0.2﹣=+=﹣=+2÷9= 2﹣﹣= 1.55﹣= 1﹣﹣+= 0.5﹣﹣=
计算．===== 1﹣===
﹣
= 
×
= 
= 1.03+0.07=
×25%= 0.05×100= 0.6：0.36=
，
，
，
，
，
，
，
．
﹣
=
+
= 1﹣
=
+
= 1﹣
=
+
+
=
﹣
= 0.2﹣
=
+
=
﹣
=
+2÷9=
﹣
= 1.55﹣
+
=
=
=
=
=
= 1﹣
=
=
=
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