=
= 1÷
= 7.2×
= 
×0÷
=相关试题
+
=
﹣
=
×
=
÷
=
：
=18：x； 3x﹣6
=8.25．能简便的用简便计算．
798+10570÷35 9.81×0.1+0.5×98.1+0.049×981
（1﹣
×
）÷（
+
）
+
+
…+
+
2008×20092009﹣2009×20082008 2
÷[5
﹣4.5×（20%+
）]
能简便的用简便计算．
798+10570÷35 9.81×0.1+0.5×98.1+0.049×981
（1﹣×）÷（+）++…++
2008×20092009﹣2009×20082008 2÷[5﹣4.5×（20%+）]
= 
×1
=
= 1﹣1×
= 
+
= 1.02﹣0.43=
÷25%×
= 
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