能巧算的要巧算4.587+3.47-2.47

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能巧算的要巧算4.587+3.47-2.47

能巧算的要巧算4.587+3.47-2.47
能巧算的要巧算
4.587+3.47-2.47

能巧算的要巧算4.587+3.47-2.47
4.587+3.47-2.47
=4.587+(3.47-2.47)
=4.587+1
=5.587

4.587+(3.47-2.47 )
=4.857+1
=5.847

先算3.47-2.47=1 再算第一项4.587+1=5.587

=4.587+(3.47-2.47)
=4.587+1
=5.587

4.587+3.47-2.47
=4.587+(3.47-2.47)
=4.587+1
=5.587

4.587+3.47-2.47=4.587+(3.47-2.47)=4.587+1=5.587

=4.587+1=5.587

4.587+3.47-2.47=5.587