Question

32.8-(9.67-7.2)怎样简便计算？

Answer 1

巧算32.8-(9.67-7.2)
解题思路:四则运算规则(按顺序计算,先算乘除后算加减,有括号先算括号,有乘方先算乘方)即脱式运算(递等式计算)需在该原则前提下进行
解题过程:
32.8-(9.67-7.2)

=32.8+7.2-9.67

=40-9.67

=30.33

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Answer 2

首先开括号，然后交换位置，可以便捷计算，运算如下:
32.8-(9.67-7.2)
=32.8-9.67+7.2
=32.8+7.2-9.67
=40-9.67
=40-(10-0.33)
=40-10+0.33
=30+0.33
=30.33

Answer 3

32.8-（9.67-7.2）的简便计算为32.8-9.67+7.2=（32.8+7.2）-9.67＝40-9.67=30.33

Answer 4

32.8一（9.67一7.2）
＝32.8一9.67十7.2
＝32.8十7.2一9.67
＝40一9.67
＝30.33

Answer 5

32.8-(9.67-7.2)=32.8-9.67+7.2=32.8+7.2-9.67=40-9.67=30.33