计算题(1) -35÷(-7)×(- 1 7 ) (2) ( 2 3 - 11 12 - 14 15 )
计算题(1)-35÷(-7)×(-17)(2)(23-1112-1415)×(-60)(3)3-2×(-5)2(4)-14-(1-0.5)×13×[2-(-3)2]....
计算题(1) -35÷(-7)×(- 1 7 ) (2) ( 2 3 - 11 12 - 14 15 )×(-60) (3)3-2×(-5) 2 (4) - 1 4 -(1-0.5)× 1 3 ×[2- (-3) 2 ] .
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(1) -35÷(-7)×(-
=5×(-
=-
(2) (
=-
=-40+55+56 =71; (3)3-2×(-5) 2 =3-2×25 =3-50 =-47; (4) - 1 4 -(1-0.5)×
=-1-
=-1-
=-1+
=
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