问题
解答题
计算题 (1)-35÷(-7)×(-
(2)(
(3)3-2×(-5)2 (4)-14-(1-0.5)×
|
答案
(1)-35÷(-7)×(-
)1 7
=5×(-
)1 7
=-
;5 7
(2)(
-2 3
-11 12
)×(-60)14 15
=-
×60+2 3
×60+11 12
×6014 15
=-40+55+56
=71;
(3)3-2×(-5)2
=3-2×25
=3-50
=-47;
(4)-14-(1-0.5)×
×[2-(-3)2]1 3
=-1-
×1 2
×[2-9]1 3
=-1-
×[-7]1 6
=-1+7 6
=
.1 6