题目内容
计算:
(1)(-3.75)+2.85+(-1
)+3.15
(2)0.47-4
-(-1.53)-1
(3)(-17)+23+(-53)+(+36)
(4)8+(-
)-5-(-0.25).
(1)(-3.75)+2.85+(-1
1 |
4 |
(2)0.47-4
5 |
6 |
1 |
6 |
(3)(-17)+23+(-53)+(+36)
(4)8+(-
1 |
4 |
(1)原式=-3.75+2.85-1.25+3.15
=-3.75-1.25+2.85+3.15
=-5+6
=1;
(2)原式=0.47+1.53-4
-1
=2-6
=-4;
(3)原式=-17+23-53+36=-17-53+23+36
=-70+79
=9;
(4)原式=8-0.25-5+0.25
=8-5
=3.
=-3.75-1.25+2.85+3.15
=-5+6
=1;
(2)原式=0.47+1.53-4
5 |
6 |
1 |
6 |
=2-6
=-4;
(3)原式=-17+23-53+36=-17-53+23+36
=-70+79
=9;
(4)原式=8-0.25-5+0.25
=8-5
=3.
练习册系列答案
相关题目