快速计算．
×3= 
×12= 
×6= 3×
= 4×
=
20×= 4×
= 3×
= 100×
= 50×
=
×33= 24×
= 35×
= 10×
= 12×
=
7×
= 
200= 0×
= 
×36= 
×15=
4×
= 26×
= 4
×1= 
×
= ×
=
×
=
相关试题
计算下列各题，能简便的要用简便方法计算．
425÷1.25÷8 4.23÷3.6+7.4 0.75×99
6.3+3.7×2.5 4.28×11﹣4.28 12.5×3.2．
怎样简便就怎样算
99999×22222+33333×33334 2003×2004÷2004×2004﹣2003×2004
2.8×（
+
） 101×
9.81×10%+0.5×98.1+0.049×981 23×
+14×
．
×42+
×12
…+
…+
）×（
）﹣（1+
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