相关试题
=
÷3=
×
= 3.5×0.2= 0.1×0.2=
=
÷0.5=
﹣
=（
）×12=口算．
500×2= 400×5= 7×30= 28÷7=
40÷5= 53+7= 28÷4= 49+6=
100﹣49= 3600÷3= 47﹣28= 32÷8=
230×7= 55×4= 789×0= 500×8=
1﹣
= 
+
= 
﹣
= 
+
=
口算．
500×2= 400×5= 7×30= 28÷7=
40÷5= 53+7= 28÷4= 49+6=
100﹣49= 3600÷3= 47﹣28= 32÷8=
230×7= 55×4= 789×0= 500×8=
1﹣= += ﹣= +=
=
=
）×12= 18
÷9=
×
= 11﹣1.1=
﹣
=
÷
=
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