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相关试题
=
= 
=直接写出得数
642+448= 820﹣260= 25×88= 2400÷600=
2﹣0.77= 0.04×5= 20.5+3.3= 10÷0.01=
+
= 1﹣
= 
×
= 
÷
=
直接写出得数．
734﹣199= 
+
= 0.6×0.5= 1÷0.5=
4÷9×
= 0.25×4÷
= （
+
）×30= 9.9÷1
=
715÷80≈ 498+3007≈ 46×101≈ 356÷61≈
﹣
= 0.6×0.25= 1.6㎡﹣30d㎡=
÷5= 
×
= 3508÷69≈
×0=
+
= 2﹣
= 3.5×
= 
÷4= 0.5×（2.8﹣2.4）=
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