计算 1.135+3.346+5.557+7.768+9.979=______.
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计算 1.135+3.346+5.557+7.768+9.979=______.
![计算 1.135+3.346+5.557+7.768+9.979=______.](/uploads/image/z/16310759-23-9.jpg?t=%E8%AE%A1%E7%AE%97%26nbsp%3B1.135%2B3.346%2B5.557%2B7.768%2B9.979%3D______%EF%BC%8E)
1.135+3.346+5.557+7.768+9.979,
=1.135+3.346+5.557+(5.557+2.211)+(5.557+4.422),
=1.135+3.346+5.557+5.557+2.211+5.557+4.422,
=(1.135+4.422)+(3.346+2.211)+5.557+5.557+5.557,
=5.557+5.557+5.557+5.557+5.557,
=5.557×5,
=27.785;
故答案为:27.785.
=1.135+3.346+5.557+(5.557+2.211)+(5.557+4.422),
=1.135+3.346+5.557+5.557+2.211+5.557+4.422,
=(1.135+4.422)+(3.346+2.211)+5.557+5.557+5.557,
=5.557+5.557+5.557+5.557+5.557,
=5.557×5,
=27.785;
故答案为:27.785.
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