问题
解答题
计算下列各题的值. (1)-5+8-(-2)+7+(-9) (2)-22×
|
答案
(1)-5+8-(-2)+7+(-9)=-5+8+2+7-9=3;
(2)-22×
+(-3)3÷(-9 4
)27 8
=-4×
+(-27)×(-9 4
)8 27
=-9+8
=-1.
计算下列各题的值. (1)-5+8-(-2)+7+(-9) (2)-22×
|
(1)-5+8-(-2)+7+(-9)=-5+8+2+7-9=3;
(2)-22×
+(-3)3÷(-9 4
)27 8
=-4×
+(-27)×(-9 4
)8 27
=-9+8
=-1.