直抒胸臆：0.25×400= 78﹣0.98= +0.5= ÷=×1.2= 568﹣198= 10÷1%= ÷=
直接写出得数．=== 10﹣8.9= （）×24= 42÷= 2.7×= 5.2÷10%=
直接写出得数． ﹣= 8.73+27=×3=×= 0.3×= 5﹣= 8.4÷0.7= 0.75÷=
直接写得数．×=+= 2.78+2.12= 1.25×8= 6÷=﹣=÷= 81÷0.3=
直接写得数．×45=+= 6.3÷0.01= 2.5+1.25= 6﹣﹣=÷= 390×0.02= 510﹣240= 0.13= 10×÷10×=
直接写出得数﹣=+=×=÷=×= 1﹣=
+0.5= 
÷
=
×1.2= 568﹣198= 10÷1%= 
÷
=
=
=
= 10﹣8.9=
）×24= 42÷
= 2.7×
= 5.2÷10%=
﹣
= 8.73+27=
×3=
×
=
= 5﹣
= 8.4÷0.7= 0.75÷
=
×
=
+
= 2.78+2.12= 1.25×8=
=
﹣
=
÷
= 81÷0.3=
×45=
+
= 6.3÷0.01= 2.5+1.25= 6﹣
﹣
=
÷
= 390×0.02= 510﹣240= 0.13= 10×
÷10×
=
﹣
=
+
=
×
=
÷
=
×
= 1﹣
=
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