直接写得数．
×0= 
×
= 
×12= 
×
= 45×
=
9×
= 
×
= 
×100= 18×
= 
×
=
+
= 18×
= 
×= 1×
= 
﹣
=
×21= 
×
= 
×6= 
×
×9=
×
= 2﹣
=
直接写出得数．
1.39+0.11= 0.08×0.5= 2.6﹣1.7= 85÷5=（
+
）×8=
4÷
=
÷
=
﹣0.9=+50%= 6.5×0.2=
口算
35+17= 11﹣0.6=
+
=
﹣
=
58﹣39= 32.8÷4=
﹣
=
=
4.6+3.2= 2.5×40=
×
=
+
=
0.43×3= 0÷5.8= 9
=
÷1=
直接写出得数．
19.3﹣2.7=
+
=×
= 5.1÷0.01=
11×
=
÷
= 15.7﹣7.5=（3.5%﹣0.035）÷
=
0.67+4.5= 1﹣0.52=
+5÷+5= 9×
+9×
=
2÷
= 0.32÷4= 1+
= 16×（
﹣0.25）=
3﹣
﹣
=
直接写得数
14.3﹣6.8=
×6=
=
= 25×32=8
2﹣
×0= 72÷9×8= 49×99+45= 1﹣
=
×6÷×6=