计算(1)-20+(-14)-(-18)-13(2)42×(?23)+(?34)÷(-0.25)(3)?123×(0.5?23)÷119(4)(212?16
计算(1)-20+(-14)-(-18)-13(2)42×(?23)+(?34)÷(-0.25)(3)?123×(0.5?23)÷119(4)(212?16+14)×(?...
计算(1)-20+(-14)-(-18)-13(2)42×(?23)+(?34)÷(-0.25)(3)?123×(0.5?23)÷119(4)(212?16+14)×(?24)(5)-1101-[-3×( 2÷3 )2-43÷22].
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窝窝降临077
推荐于2016-01-09
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(1)-20+(-14)-(-18)-13
=-20-14+18-13
=-47+18
=-29;
(2)
42×(?)+(?)÷(-0.25)
=-28+3
=-25;
(3)
?1×(0.5?)÷
1=-
×(-
)÷
1=
÷
1=
;
(4)
(2?+)×(?24)=-2
×24+
×24-
×24
=-60+4-6
=-62;
(5)-1
101-[-3×( 2÷3 )
2-
÷2
2]
=-1-[-3×
-
÷4]
=-1-[-
-
]
=-1+
=
.
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