直接写出得数． 510÷30= 700×60= 320÷20= 210×4=300÷50= 960÷30= 560÷80= 480÷60=
直接写得数： 3﹣0.07=×= 7.2÷0.8×9= 0.42= 1÷0.01%==
直接写出得数．+= 10﹣5.75= 7÷0.01=×= 1.7×5.4×0= 54+49+46= 6298÷70=（+）×30= 1×（﹣1÷3）=﹣×=
直接写出得数． ①2﹣= ②0.1÷0.01= ③×=④+= ⑤127+28= ⑥1÷7+= ⑦1.8×0.3= ⑧2.9+4.5= ⑨×2÷×2= ⑩0.25×99+0.25= ．
简算 2500+450÷18×32 2008× 47×（+）×46 1.25×32×0.25．
直接写得数 0.25×4= 5.2+8= 2.5﹣0.36﹣0.64== 5×4÷5×4= 1÷3×=
×
= 7.2÷0.8×9=
=
+
= 10﹣5.75= 7÷0.01=
×
= 1.7×5.4×0=
+
﹣1÷3）=
﹣
= ②0.1÷0.01= ③
×
=④
+
=
= ⑦1.8×0.3= ⑧2.9+4.5=
×2÷×2= ⑩0.25×99+0.25= ．= ②0.1÷0.01= ③×=④+== ⑦1.8×0.3= ⑧2.9+4.5=×2÷×2= ⑩0.25×99+0.25= ．
+
）×46
=
=
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