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脱式计算（能简便计算的要简便计算）．187.7×11-187.779÷115+29×511．
题目详情
脱式计算（能简便计算的要简便计算）．
187.7×11-187.7
÷
+
×
．脱式计算（能简便计算的要简便计算）．
187.7×11-187.7
÷
+
×
．
÷
+
×
．
7 9 7 7 9 9
+
×
．
11 5 11 11 5 5
×
．
2 9 2 2 9 9
．
5 11 5 5 11 11
187.7×11-187.7
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187.7×11-187.7
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▼优质解答
答案和解析
①187.7×11-187.7
=187.7×（11-1）
=187.7×10
=1877
②
÷
+
×
=
×
+
×
=（
+
）×
=1×
=
7 9 7 7 79 9 9÷
+
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=
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=1×
=
11 5 11 11 115 5 5+
×
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2 9 2 2 29 9 9×
=
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5 11 5 5 511 11 11
=
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5 11 5 5 511 11 11+
×
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5 11 5 5 511 11 11
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=
2 9 2 2 29 9 9）×
=1×
=
5 11 5 5 511 11 11
=1×
=
5 11 5 5 511 11 11
=
5 11 5 5 511 11 11
=187.7×（11-1）
=187.7×10
=1877
②
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