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脱式计算下面各题.9.05-8.8+3.21;54.36-(38.08+13.95 );(27.16-8.22

来源:学生作业帮 编辑:作业帮 分类:综合作业 时间:2024/05/16 04:39:19
脱式计算下面各题.
9.05-8.8+3.21;
54.36-(38.08+13.95 );
(27.16-8.223)+(72.48-27.847);
1-(0.213+0.199).
(1)9.05-8.8+3.21
=0.25+3.21
=3.46;

(2)54.36-(38.08+13.95 )
=54.36-52.03
=2.33;

(3)(27.16-8.223)+(72.48-27.847)
=(27.16+72.48)-(8.233+27.847)
=99.64-36.08
=63.56;

(4)1-(0.213+0.199)
=1-0.412
=0.588.