问题 解答题
计算:
(1)-8+15×(-
2
3
)               
 (2)(-2)2×5-(-2)3÷4.
答案

(1)-8+15×(-

2
3

=-8-10   

=-18;                             

(2)(-2)2×5-(-2)3÷4

=4×5+8÷4                                   

=20+2                                            

=22.

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