计算:(1)(-7)-9-(-3)+(-5) (2)-4.2+5.7-8.4+1计算:(1)(-7)-9-(-3)+(-5) (2)-4.2+5.7-8.4+10
问题描述:
计算:(1)(-7)-9-(-3)+(-5) (2)-4.2+5.7-8.4+1
计算:(1)(-7)-9-(-3)+(-5)
(2)-4.2+5.7-8.4+10
答
1,-18。2,3.1
答
去
答
-7-9+3-5=-18
(2)=1.5+1.6=3.1
答
-18
2.7
答
-7-9+3-5=-18 3.1
答
1.-18 2.3.1
答
-7-9+3-5=-18
答
-18 3.1