直接写出结果．1.85+2.3= 3.2﹣1.7= 3.6÷1.8=1.25×0.8= 1﹣0.78= 9.3÷0.93=2.7×3= 62= 0.25×0.7×4=
直接写得数．0.36÷0.3= 2.5×4= 2.9×1000= 1﹣=﹣= 1÷×= 1﹣1%= 38﹣19=
直接写得数0.36+0.4= 0.5÷0.25= 0.23= 4×÷4×=+= （﹣）×12= ÷0.18= 4.8﹣1.3﹣2.7=
直接写出得数．1.36+0.24= 320﹣180= 10﹣2= 36÷0.4=﹣= += 1.2×50= ×5=9×= ×= 0.375×4= 9÷=
口算0.1×10= 48÷4.8= 31÷1000= 1.5+0.25﹣=9﹣= 3.838÷38= = 1﹣+=0.5×1.6= ×4÷×4=
直接写出得数．+= 0.77+0.33= ×4+4×=﹣= =
=
﹣
= 1÷
×
= 1﹣1%= 38﹣19=
÷4×
+
= （
﹣
）×12= 
÷0.18= 4.8﹣1.3﹣2.7=
= 36÷0.4=
﹣
= 
+
= 1.2×50= 
×5=
= 
×
= 0.375×4= 9÷
=
=
= 3.838÷38= 
= 1﹣
+
=
×4÷
×4=
+
= 0.77+0.33= 
×4+4×
=
﹣
= 
=
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