心灵脑快．6.3÷0.9= 0.006×100= 2004﹣299= 11﹣= 26×0.25×4=7×÷7×= 5÷7+5= 31×197≈ 0.56×=
直接写得数.+=+= 1﹣=﹣=﹣=﹣=++1=++=+=+= 1﹣﹣=+﹣=
口算.+=﹣=+﹣= 3+=+= 1﹣﹣=++= 4﹣=
计算：．
= ．
= 26×0.25×4=
÷7×
= 5÷7+5= 31×197≈ 0.56×
= 
+
=
+
= 1﹣
=
﹣
=
﹣
﹣
=
+
+1=
+
+
=
+
=
+
= 1﹣
﹣
=
+
﹣
=
+
﹣
=
+
﹣
= 3+
=
+
= 1﹣
﹣
=
+
+
= 4﹣
=
．
= ．
= ．
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