脱式计算（能简算的要简算）9.8×75+75×0.2 0.78÷0.25÷40 7.2+2.8×5.06 56×10.1．
直接写得数．9.3×7.9≈ ×0.5=1 ×= +=÷2= ×5÷×5= 0.42= 0.561×100=
直接写出得数+= ÷45%= 30﹣29.02= ﹣+=（×12= 1.25××8= 8.2+0.54+0.46= ÷﹣=
直接写出得数= == 0.9+99×0.9=8.8÷0.2= == =
直接写出得数．2﹣= 0÷÷=+3= 134﹣34=×= ÷×=﹣= 4×=
﹣= 24×= 6+= ÷5= 5﹣=÷= ×0.5= 0.4÷= ×= +=
×
= 
+
=
÷2= 
+
= 
÷45%= 30﹣29.02= 
﹣
+
=
×12= 1.25×
×8= 8.2+0.54+0.46= 
÷
= 
=
= 0.9+99×0.9=
=
= 
=
= 0÷
÷
=
+3= 134﹣34=
×
= 
÷
×
﹣
= 4×
=
﹣
= 24×
= 6+
= 
÷5= 5﹣
=
÷
= 
×0.5= 0.4÷
×
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+
=
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