一步一步细心算！注意能简算的要简算．
（125﹣80）×12÷20 75+360÷（20﹣5） （6+8）×12.5
7.26+5.3+0.74﹣3.53 735﹣248﹣152 4500÷4÷25．
相关试题
口算．
21%+5%
÷4 8π
+
125×8
×
+
﹣
÷
8÷64
×
7π
+
×
13÷26
﹣
67%﹣24% 99×5
×
×
÷
100÷25
×
×
×
÷
667+34
÷
÷
1263﹣163
÷
×
÷
÷
98%﹣55%
÷
×
15.7÷3.14
﹣
×
÷
÷
+
÷
×
÷
×
6.28÷π 0×
21÷5
×
÷
39×
3π 66×10
0÷875 1﹣
﹣
（﹣
）×12
×
+
×
3﹣
﹣
﹣
=
÷
= 6÷1%=
÷
= 24×0.5= 1÷
=
+
×17=
÷
=
÷3= 6×
=
﹣
=
=
+
=
×7=
÷
=
÷2=
﹣
=
÷
= 20%+3=
﹣
=
÷
=
÷7=
=
= 82=
×4÷
+
）= 9.9×99+9.9=
π=
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