直接写出得数．
3500÷7= 50×0= 15×4= 40×5= 0﹣7×85=
30×8= 300÷6= 210÷7= 22+45= 80÷5=
31+50= 975﹣43= 1600÷2= 230×2= 40÷8=
直接写出得数．
3500÷7= 50×0= 15×4= 40×5= 0﹣7×85=
30×8= 300÷6= 210÷7= 22+45= 80÷5=
31+50= 975﹣43= 1600÷2= 230×2= 40÷8=
÷3=
×15= 2﹣
=
÷
= 5÷
=
= 1÷
=
÷60%=
×15=
=
= 2﹣
=
=
×13
×
×
×
÷
×
×
÷
×
÷
÷
÷
÷
÷21．
×
=
÷6=
÷
= 1÷
×
=
﹣
=
+
= 6÷
=
=
=
=
=
=
÷
= 0.25×3.2×4= 32×（1﹣0.99）=
÷
×
÷
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