2﹣
÷
﹣
8.1÷（5﹣0.005×700×1
）
〔1.8﹣1.8×（1.8﹣1.8）〕÷0.36 〔5﹣1.7÷（2
﹣1
）〕×1
51
÷
+71
÷
+91
÷
6÷〔35×（
+
）〕×4.8 1
+3
+5
+7
+9
．
2﹣÷﹣ 8.1÷（5﹣0.005×700×1）
〔1.8﹣1.8×（1.8﹣1.8）〕÷0.36 〔5﹣1.7÷（2﹣1）〕×1 51÷+71÷+91÷
6÷〔35×（+）〕×4.8 1+3+5+7+9．
×
；
×
．
米相加是多少米？
×
=
×
×
=
×
= 5×
=
×21=
×
=
×
=
×
=
×
=
= 1﹣
﹣
﹣
= 0.33+0.77=
×
= 18.84÷3.14=（
+
）×6=
+
=
=
×
=
﹣
=
×
×
=
×75=
×
=
×
=
×
=
×（1﹣
）=
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