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简介:
18.73+4.36-8.73+5.64
=(18.73-8.73)+(4.36+5.64)
=10+10
=20
8.96-(4.96+0.72)
=8.96-4.96-0.72
=4-0.72
=3.28
12.34-(2.34-1.99)
=12.34-2.34+1.99
=10+1.99
=11.99
37.34-5.55-4.45
=37.34-(5.55+4.45)
=37.34-10
=27.34
3.64+12.75+5.36-7.25
=3.64+5.36+(12.75-7.25)
=9+5.5
=14.5
9.6+20.03-11.03
=9.6+(20.03-11.03)
=9.6+9
=18.6
12.01+7.12-8.01
=12.01-8.01+7.12
=4+7.12
=11.12
12.99+10.48-4.99
=12.99-4.99+10.48
=8+10.48
=18.48