630÷70= 4.3﹣﹣0.8= 3.4+1.6= 1.8÷0.3= 25×25=2.5×40= 4×70= 18×50= 4.2÷6= 0.125×80=
直接写出得数．①×5= ②×= ③2﹣= ④2÷= ⑤÷1=⑥0×= ⑦×= ⑧÷= ⑨÷21= ⑩+=
口算：×3= ，×2= ，×= ，×= ，÷4= ，÷= ，÷= ，÷= ．
直接写出得数．15×= 6= 0.52=30：= 3.2+0.68= 6×÷6×=
直接写得数×15= ×2= ×= ×= ×=1×= ×= ×34= ×= ×=×= ×= ÷10= ÷= 0÷=÷4= 1÷= 22÷= ÷= ÷0.4=
直接写出得数．×25= ÷6= 0.54+O.46= 9﹣=（）×30= = 177+99= 3÷7== 0.9×99+0.9=
×5= ②
×
= ③2﹣
= ④2÷
÷1=
= ⑦
×
= ⑧
÷
= ⑨
÷21= ⑩
+
=
×3= ，
×2= ，
×
= ，
×
= ，
÷4= ，
÷
= ，
÷
÷
= ．
= 
6= 0.52=
= 3.2+0.68= 6×
÷6×
×15= 
×2= 
×
= 
×
= 
×
=
= 
×
= 
×34= 
×
= 
×
=
×
= 
×
= 
÷
= 0÷
=
÷4= 1÷
= 22÷
= 
÷
÷0.4=
×25= 
÷6= 0.54+O.46= 9﹣
=
）×30= 
= 177+99= 3÷7=
= 0.9×99+0.9=
粤公网安备 44130202000953号