口算．
32×50= 5400÷90= 15×40= 420﹣20×7=
30×130= 370﹣250= 2400÷20= 840+40÷8=
57+45= 24×250= 420﹣60= 48×（320﹣170）×0=
相关试题
直接写得数．
0.1÷0.01= 
+3.25= 11﹣
= 9.5+0.15= 
﹣
=
（0.18+
）÷9= 4.5÷
+
×0= 1.25×3.2×25= 
×
÷
×15= ×
÷
×=
﹣
= 
﹣
= 2.54+4.6=
+
= 8.2﹣5.6= 
+
= 
+
=
+
=
﹣
= 
+
= 
+
=
﹣
= 
+
= 7÷50= 
+7= 15.42﹣6.3=
+
= 
+
= 
+
+
= 
+
+
=
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