256÷7 64×39 832÷4 602÷54.3﹣1.5 6.7+0.8 256+389 900﹣471．
直接写得数．×3= 6÷=÷1= 1÷÷=÷= 0.5÷=﹣= 0÷×=
直接写数： 7×=÷6=÷= 1.6÷0.7= 1÷3×=÷=÷=×0.15=÷=×÷×=
直接写出得数﹣=+= 24×= 36÷= 0.27÷0.56= 0.125×8= 0.63÷9= 0.32=
直接计算×4=÷4= 8÷= 8×=÷= 39÷=
直接写得数．×0=×=×12=×=÷=÷= 9×=×= 18×=÷=÷=÷12=
×3= 6÷
=
÷1=
÷
÷
= 0.5÷
=
﹣
=
=
÷6=
÷
= 1.6÷0.7= 1÷3×
=
÷
÷
=
÷
=
×
÷
﹣
=
+
= 24×
= 36÷
=
×4=
÷4= 8÷
= 8×
= 39÷
×0=
×
=
×12=
×
=
÷
=
÷
= 9×
=
×
= 18×
=
÷
=
÷
=
÷12=
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