直接写得数0.4+= ×= ÷= 25%×4= ÷7=3.14×32= 1﹣80%= ××15= ×= 3000×40%=
直接写得数． 2.73+3.27=÷=×= 11﹣=×=+=
直接写出结果： 2.2+3.57= 1.125×8= 35×= 4﹣= 1﹣﹣= 1×8+8×=+= 2÷= 3.25×4= 1.9+0.1﹣1.9+0.1=
直接写出得数． 9.8+6.7=+0.2= 15﹣= 1.25×8= 1÷0.25== 0×2= 7.2÷4= 25÷10%= 1﹣=
直接写出得数 7.5+2.5= 5.2÷1.3= 1.8×0.5= 4.5÷0.1=+=﹣=×=（+）×10= 1÷+= 1+2÷3= 1÷×=÷=
直接写出得数． 2.2+3.5= 0.4×30=+=×= 0×0.99= 67×99+67= 30×= 24÷=
= 
×
÷
= 25%×4= 
÷7=
×
×15= 
×
= 3000×40%=
÷
=
×
= 11﹣
=
×
=
+
= 4﹣
=
﹣
= 1
×8+8×=
+
= 2÷== 4﹣=﹣= 1×8+8×=+= 2÷=
+0.2= 15﹣
= 1.25×8= 1÷0.25=
= 0×2
= 7.2÷4= 25÷10%= 1﹣
=
+
=
﹣
=
×
=（
+
）×10=
+
= 1+2÷3= 1÷
×
=
÷
=
+
=
×
=
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