计算下面各题，能用简便方法的要用简便方法计算．
（1）9.78×2.3+2.3×10.22 （2）1.5×11﹣7.83+3.5
（3）7.25÷（31﹣29.55）×1.3 （4）75.6÷[0.7×（8.5﹣7.6）]．
相关试题
×
=
=
=
= 2.5×13×4= 4×
÷4×
×
= 4.5﹣
= 1+
÷
×
= 3÷20%= 3÷8+
=
﹣
﹣
= 3÷
﹣
÷7×直接写出得数．
7.2+2.8=
8﹣2.5=
0.3+0.6=
0.32+0.8=
2×
=
15×
= 1﹣0.52= 1÷
= 
+
= 16×
=
+0= 2.5×4= 
﹣
= 1﹣
= 
×5=
=
=
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