A-A+
计算:(1)4.7-(-8.9)-7.5-(6);(2)314+(-235)+514+(-8
问题详情
计算:
(1)4.7-(-8.9)-7.5-(6);
(2)3
(3)2.7+(-8.5)-(3.4)-(-1.2);
(4)-0.6-0.08+
参考答案
(1)4.7-(-8.9)-7.5-(+6)
=4.7+8.9-7.5-6
=13.6-13.5
=0.1;
(2)314+(-235)+514+(-825)
=314-235+514-825
=314+514-235-825
=8.5-11
=-2.5;
(3)2.7+(-8.5)-(+3.4)-(-1.2)
=2.7-8.5-3.4+1.2
=3.9-11.9
=-8;
(4)-0.6-0.08+25-2511-0.92+2511
=-0.6+0.4-0.08-0.92-2511+2511
=-0.2-1
=-1.2.
考点: