问题
解答题
计算:
(1)-6+(+7)-(+2)-(-1)
(2)-10+8÷(-2)2-(-4)×(-3)
答案
(1)-6+(+7)-(+2)-(-1)
=(-6)+7+(-2)+1
=-8+8
=0;
(2)-10+8÷(-2)2-(-4)×(-3)
=-10+8÷4-12
=-10+2-12
=-20.
计算:
(1)-6+(+7)-(+2)-(-1)
(2)-10+8÷(-2)2-(-4)×(-3)
(1)-6+(+7)-(+2)-(-1)
=(-6)+7+(-2)+1
=-8+8
=0;
(2)-10+8÷(-2)2-(-4)×(-3)
=-10+8÷4-12
=-10+2-12
=-20.