直接写出得数7÷= 24%×5= 5÷5%= 6.4×= +×=×7÷= 12×+6×= 1﹣+= 8÷﹣0.5= +0.9=
口算： 2﹣1= 1.4﹣= 1÷=÷1=+= 2+0.25= 9.2×0.25×4= 7×1.3+7×6.7= 4﹣（+）=﹣=
直接写得数． 1.5×0.8= 5.6+2.8=×=﹣=÷=÷=+= 12﹣=÷= 2.5÷0.5=
0.46+1.54= ；+= ；÷80%= ； 25×0.16×8= ； 44÷= ；×= ； 1÷0.5×2= ；（﹣）+= ．
直接写得数+=﹣=×=÷=÷= 20×=×5=÷5=
直接写得数． 9.3×7.9≈ ×0.5=1×=+=÷2=×5÷×5= 0.42= 0.561×100=
= 24%×5= 5÷5%= 6.4×
= 
+
×
=
×7÷
+6×
+
= 8÷
﹣0.5= 
+0.9=
= 1.4﹣
=
+
=
+0.25= 9.2×0.25×4= 7×1.3+7×6.7= 4
﹣（
+
）=
=
×
=
﹣
=
÷
=
÷
=
+
= 12﹣
=
÷
= 2.5÷0.5=
+
= ；
÷80%= ； 25×0.16×8= ；
= ；
×
= ； 1÷0.5×2= ；（
﹣
）+
= ．
+
=
﹣
=
×
=
÷
=
÷
= 20×
=
×5=
÷5=
×
=
+
=
÷2=
粤公网安备 44130202000953号