问题
解答题
计算: (1)|-10|+|+8|; (2)(-24)-(-15); (3)-3×(-4)×(-5); (4)(-
(5)(-36)×(
(6)42×(-
|
答案
(1)|-10|+|+8|
=10+8
=18;
(2)(-24)-(-15)=-9;
(3)-3×(-4)×(-5)
=12×(-5)
=-60;
(4)(-
)÷(-7 8
)=3 4
;7 6
(5)(-36)×(
-2 9
+1 4
)1 18
=-36×
+36×2 9
-36×1 4 1 18
=-8+9-2
=-1;
(6)42×(-
)+(-2 3
)÷(-3 4
)1 4
=-28+3
=-25.