问题
解答题
计算题: (1)(+7)+(-8)-(+3)-(-4); (2)-1
(3)-36×(
(4)-13-(1-0.5)×
(5)(-0.25)×1.25×(-4)×(-8); (6)(-1)10×2+(-2)3÷4. |
答案
(1)(+7)+(-8)-(+3)-(-4)
=7-8-3+4
=11-11
=0;
(2)-1
-21 3
÷(-1 3
)×(-3)3 2
=-1
-1 3
×(-7 3
)×(-3)2 3
=-1
-41 3 2 3
=-6;
(3)-36×(
-1 9
-1 6
)1 18
=(-36)×
+(-36)×(-1 9
)+(-36)×(-1 6
)1 18
=-4+6+2
=-4+8
=4;
(4)-13-(1-0.5)×
×[2-(-3)2]1 3
=-1-
×1 2
×(2-9)1 3
=-1+7 6
=
;1 6
(5)(-0.25)×1.25×(-4)×(-8)
=(-0.25)×(-4)×[1.25×(-8)]
=1×(-10)
=-10;
(6)(-1)10×2+(-2)3÷4
=1×2+(-8)÷4
=2-2
=0.