问题
解答题
计算: (1)-72+72÷36 (2)3
(3)(-1)3-(1-
(4)-92+2×(-3)2-(-6)÷(-
(5)-2×(-
(6)(
|
答案
(1)-72+72÷36
=-72+2
=-70;
(2)3
×(2 3
-1 3
)×1 2
÷3 11 5 4
=
×(-11 3
)×1 6
×3 11 4 5
=
;2 15
(3)(-1)3-(1-
)÷3×[2-(-3)2]1 2
=-1-
×1 2
×[2-9]1 3
=-1-
×[-7]1 6
=-1+7 6
=
;1 6
(4)-92+2×(-3)2-(-6)÷(-
)4 3
=-81+2×9-4.5
=-81+18-4.5
=-67.5;
(5)-2×(-
)2+|-(-2)|3-(-1 2
)1 2
=-2×
+8+1 4 1 2
=-
+8+1 2 1 2
=8;
(6)(
-1)×(1 50
-1)×(1 49
-1)×…×(1 48
-1)×(1 4
-1)×(1 3
-1)1 2
=-
×49 50
×…×48 49
×2 3 1 2
=-
.1 50