简便计算1.135+3.346+5.557+7.768+9.979=?
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简便计算1.135+3.346+5.557+7.768+9.979=?简便计算1.135+3.346+5.557+7.768+9.979=?简便计算1.135+3.346+5.557+7.768+9.
简便计算1.135+3.346+5.557+7.768+9.979=?
简便计算1.135+3.346+5.557+7.768+9.979=?
简便计算1.135+3.346+5.557+7.768+9.979=?
1.135+3.346+5.557+7.768+9.979
=4.481+6+7+10-0.443+0.768-0.021
=27.481+0.768-0.464
=27.481+0.304
=27.785