题目内容
计算题
(1)3-15;
(2)(-13)-(-8);
(3)12+(-7)-(-8)-15;
(4)(-17)+23+(-53)-(-36);
(5)39-15+16-25-(+25);
(6)(-1.4)-(+2
)-(-1
)+(-3.2);
(7)(-1.75)-(-4)-(+2
)-
;
(8)-3-|-1|-(-3)-(0-3
).
(1)3-15;
(2)(-13)-(-8);
(3)12+(-7)-(-8)-15;
(4)(-17)+23+(-53)-(-36);
(5)39-15+16-25-(+25);
(6)(-1.4)-(+2
| 2 |
| 3 |
| 2 |
| 5 |
(7)(-1.75)-(-4)-(+2
| 1 |
| 4 |
| 1 |
| 6 |
(8)-3-|-1|-(-3)-(0-3
| 1 |
| 2 |
(1)3-15=-12;
(2)(-13)-(-8)=-13+8=-5;
(3)12+(-7)-(-8)-15=12-7+8-15=-2;
(4)(-17)+23+(-53)-(-36)=-17+23-53+36=-70+59=-11;
(5)39-15+16-25-(+25)=39-15+16-25-25=55-65=-10;
(6)(-1.4)-(+2
)-(-1
)+(-3.2)=(-1
+1
)-(2
+3
)=-5
;
(7)(-1.75)-(-4)-(+2
)-
=4-(1
+2
)-
=-
;
(8)-3-|-1|-(-3)-(0-3
)=-3-1+3+3
=2
.
(2)(-13)-(-8)=-13+8=-5;
(3)12+(-7)-(-8)-15=12-7+8-15=-2;
(4)(-17)+23+(-53)-(-36)=-17+23-53+36=-70+59=-11;
(5)39-15+16-25-(+25)=39-15+16-25-25=55-65=-10;
(6)(-1.4)-(+2
| 2 |
| 3 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 13 |
| 15 |
(7)(-1.75)-(-4)-(+2
| 1 |
| 4 |
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 6 |
(8)-3-|-1|-(-3)-(0-3
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
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