直接写出得数．
1.53﹣0.5= 7.8+0.9= 7.5﹣2.5=
12÷0.4= 0.56+4.44= 2.9+3.7+2.1=
4×0.25= 1.25×5×8= 7.6×8+2.4×8=
相关试题
．
﹣
=
12.5%=4÷4÷
=
×6=
）=（
﹣
）÷
=
﹣
+
）
÷[（
+
）×
]
﹣
）×3]．脱式计算与简便运算
= 
= 
= 
=
6﹣
×
﹣
= 〔1﹣（
﹣
）〕÷
= 
= 
=
5+3.6×2.5÷0.48= 
= 
= 
=
3.6×2
÷16.9÷（3
×1.1 6）×1.3= 
+
+
+…+
= ．
=（
）×12=
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