口算
（
+
）×12= 2.2+3.57= 0.9﹣0.26= 0.9×99+0.9= 390×0.02= +
=
+0.8+
= ﹣
= 
×12= 
﹣
+
= 14÷35= 
÷
=
口算
（+）×12= 2.2+3.57= 0.9﹣0.26= 0.9×99+0.9= 390×0.02= +=+0.8+= ﹣= ×12= ﹣+= 14÷35= ÷=
试题篮
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