问题 解答题
计算:
(1)-20+(-15)-(-14)-18;  (2)(-20)×(-6)-(-48)÷8;
(3)-2
1
6
×5-2
1
6
×(-4)+
13
6
×(-8)
; (4)-16÷(-2)3-(-
1
8
)×(-4)
答案

(1)-20+(-15)-(-14)-18

=-20-15+14-18

=-39,

(2)(-20)×(-6)-(-48)÷8

=120+6

=126,

(3)-2

1
6
×5-2
1
6
×(-4)+
13
6
×(-8)

=-2

1
6
×(5-4+8)

=-

13
6
×9

=-

39
2

(4)-16÷(-2)3-(-

1
8
)×(-4)

=-16÷(-8)-

1
2

=2-

1
2

=1

1
2

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