口算．
82+258= 24×60= 840÷20= 860﹣403=
58×0= 320÷20= 22+508= 125﹣25×0=
420÷15= 25×6×4= 65﹣15×2+3= 75﹣6×（1+4）=
相关试题
直接写出得数．
40×0.25= 1.25×0.8= 0.1÷0.01= 0.6+1.9=
3.5﹣2.25= 12.8÷4= 
+
= 
﹣
=
12×
= 1÷
= 
×
= 
÷
=
直接写出得数
1﹣0.375= 0.125×8= 280﹣45= 1.3÷0.25=
400÷600= 8.64×100= 
+
= ﹣
=
×
= 
÷
= 12×
= 6÷
=
÷
=
﹣
×12= 1.7+3.03=
﹣
=
+
= 6﹣6÷6= 20×20%=
= 12.5×6.4=
﹣
= 121×
=
= 19÷
= 
﹣
= 
×
=
= 
=
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