计算下面各题，能简便的要简便计算．
4.5+7.8×2.5÷1.3 75×60%+4×
+0.6 3×（
+
）﹣
3.4×99+3.4
12.5×3.2×2.5 12×（
+
﹣
） 
﹣
x=
x：
=36：18．
相关试题
计算下面各题，能简便的要简便计算．
4.5+7.8×2.5÷1.3 75×60%+4×+0.6 3×（+）﹣ 3.4×99+3.4
12.5×3.2×2.5 12×（+﹣） ﹣x= x：=36：18．
﹣
=
+
=
×
= 25×10%=
﹣
= 3+1
=
×6= 7.43﹣1.4﹣2.6= 1÷
=
﹣
）= 25×4= 5.4÷0.3=
=
×
= 20%÷
=
×30%= 3.5+1.5= 0.5×
+
=
= 2.4÷
=
×
= 80×40%= 21÷
=
﹣
×5=
×18×
=
+
=
×12= 1÷5%= 1﹣0.625=
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