按从小到大的顺序排列下面的数．（1）8.41 8.14 4.18 8.04 ＜ ＜ ＜ （2）0.98 0.89 0.809 0.918 ＜ ＜ ＜ ．
直接写出得数.= 1﹣40%== 52= 1÷== 3﹣==== 0.8×÷=
看谁算得快．= 1﹣==== 1﹣=== 1﹣=== 1﹣=
怎样算简便就怎样算． ①= ②= ③= ④= ．
直接写出得数．+=﹣=﹣= 1﹣=﹣=+=
计算下列各题，能简算的要简算．．
= 1﹣40%=
= 52= 1÷
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=
=
= 0.8×
÷
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= 1﹣
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=
=
= 1﹣
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=
=
=
=
= 1﹣
=
= 
= 
= 
= ．
+
=
﹣
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﹣
= 1﹣
=
﹣
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+
=
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