楚清子
幼苗
共回答了21个问题采纳率:95.2% 举报
①6.8-1.36-0.64
=6.8-(1.36+0.64),
=6.8-2,
=4.8;
②(2.5×73)×0.4,
=2.5×0.4×73,
=1×73,
=73;
③
5
8 +
4
5 -
3
8 +
1
5 ,
=(
5
8 -
3
8 )+(
4
5 +
1
5 ),
= 1
1
4 ;
④0.25+
11
15 +
3
4 +
4
15 ,
=(0.25+0.75)+(
11
15 +
4
15 ),
=1+1,
=2;
⑤32.5×1.7+32.5×9.3-32.5,
=32.5×(1.7+9.3-1),
=32.5×10,
=325.
1年前
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