直接写出得数．9.56+1.34= = 1﹣= = 1÷0.25%== = = 1= 2.3÷0.3=
计算下列各题，得数化成最简分数．+=+=﹣=+﹣=+=+=﹣= 1﹣﹣=
直接写出得数．+=﹣=+= 1﹣= 3+=﹣=+=﹣=
．
一个数减去，再加上．
计算，得数要约成最简分数+=﹣=﹣=+=
= 1﹣
= 
= 1÷0.25%=
= 
= 
= 1
= 2.3÷0.3=
+
=
+
=
﹣
=
+
﹣
=
=
+
=
﹣
= 1﹣
﹣
=
+
=
﹣
=
+
= 1﹣
=
=
﹣
=
+
=
=
．
，再加上
．
+
=
﹣
=
﹣
=
+
=
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