650÷50= 98+17= 103×40= 380+320=546﹣299= 90×70= 27×ll= 37+68×0=25×14﹣25×10= 56×78×0= 1000÷125= 523+497=
直接写出得数．÷= 1÷=×=×8=﹣=÷= 1÷=÷6=
用图形表示4÷．
直接写出得数﹣0.625== 40÷8%== 3×11=+79×= 8﹣4÷=×1.5+3== 4×+÷4===
直接写出得数======= 8×0.125=
直接写得数÷4=+=÷=×= 8×= 2÷= 1÷= 1﹣﹣= 2﹣= 2××=
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÷
= 1÷
=
×
=
×8=
﹣
=
÷
= 1÷
=
÷6=
．
﹣0.625=
= 40÷8%=
= 3
×11=
+79×
=
×1.5+3=
= 4×
+
=
=
=
=
=
=
=
=
= 8×0.125=
÷4=
+
=
÷
=
×
= 8×
=
= 1÷
= 1﹣
﹣
= 2﹣
= 2×
×
=