19.43-4.6+3.4简便计算还有14.8-9.99

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19.43-4.6+3.4简便计算还有14.8-9.99
19.43-4.6+3.4简便计算
还有14.8-9.99

19.43-4.6+3.4简便计算还有14.8-9.99
19.43-4.6+3.4
=19.43-(4.6-3.4)
=19.43-1.2
=18.23

14.8-9.99
=14.8-10+0.01
=4.8+0.01
=4.81

19.43-(4.6-3.4)=19.43-12=18.23

19.43-4.6+3.4=18.23

14.8-9.99=14.8-10+0.01=4.81

14.8-(10-0.01)=14.8-10+0.01=4.81

=(19-4+3)+(0.43+0.4-0.6)=18.23