计算下面各题（能简算的要简算）
1.25×3.2×2.51.8×5.6+44×0.183.4×99+3.4
101×8.3﹣8.3（27÷1.8﹣11）×2.539.4×[0.96÷（5.4÷0.9）]．
简便运算．
7.5+2.7+2.7+2.5+4.3 7.9﹣3.27﹣0.73+1.172×125
（80+4）×12567×88+67×11+67 203×15．
怎样简便怎样算：
①8.35+3.8﹣2.35②15.4﹣（5.4+2.3）③98×45
④16×125×25⑤12×69﹣69×2⑥（20+8）×25．
用简便方法计算
2011×
+
﹣
+
（
+
）÷
25%×
×4×
．
口算题
435+199=16×0.2=12
=4×25%=
2﹣2÷5=
=
=5.5×1.6+1.6×4.5=