
怎样算简便就怎样算.23.75-8.64-3.36 1
怎样算简便就怎样算.23.75-8.64-3.3617.83-9.5-7.83-0.53.45+8.7+16.55+1.38.54-5.9627.38-5.34+2.62...
怎样算简便就怎样算.23.75-8.64-3.36 17.83-9.5-7.83-0.53.45+8.7+16.55+1.3 8.54-5.9627.38-5.34+2.62-4.66.
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(1)23.75-8.64-3.36
=23.75-(8.64+3.36)
=23.75-12
=11.75
(2)17.83-9.5-7.83-0.5
=17.83-7.83-9.5-0.5
=(17.83-7.83)-(9.5+0.5)
=10-10
=0
(3)3.45+8.7+16.55+1.3
=(3.45+16.55)+(8.7+1.3)
=20+10
=30
(4)8.54-5.96
=8.54-(6-0.04)
=8.54-6+0.04
=2.54+0.04
=2.58
(5)27.38-5.34+2.62-4.66
=27.38+2.62-5.34-4.66
=(27.38+2.62)-(5.34+4.66)
=30-10
=20
=23.75-(8.64+3.36)
=23.75-12
=11.75
(2)17.83-9.5-7.83-0.5
=17.83-7.83-9.5-0.5
=(17.83-7.83)-(9.5+0.5)
=10-10
=0
(3)3.45+8.7+16.55+1.3
=(3.45+16.55)+(8.7+1.3)
=20+10
=30
(4)8.54-5.96
=8.54-(6-0.04)
=8.54-6+0.04
=2.54+0.04
=2.58
(5)27.38-5.34+2.62-4.66
=27.38+2.62-5.34-4.66
=(27.38+2.62)-(5.34+4.66)
=30-10
=20

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