题目内容
计算
(1)(-3)+(-4)-(+11)-(-9)
(2)-0.5-(-3
)+2.75-7
;
(3)(
+
-
)×(-36)
(4)-14-(-5
)×
+(-2)3÷|-32+1|.
(1)(-3)+(-4)-(+11)-(-9)
(2)-0.5-(-3
| 1 |
| 4 |
| 1 |
| 2 |
(3)(
| 1 |
| 2 |
| 5 |
| 6 |
| 7 |
| 12 |
(4)-14-(-5
| 1 |
| 2 |
| 4 |
| 11 |
(1)(-3)+(-4)-(+11)-(-9)
=-3-4-11+9
=-18+9
=-9;
(2)-0.5-(-3
)+2.75-7
=(-0.5-7
)+(3.25+2.75)
=-8+6
=-2;
(3)(
+
-
)×(-36)
=-
×36-
×36+
×36
=-18-30+21
=-27;
(4)-14-(-5
)×
+(-2)3÷|-32+1|
=-1+2-8÷|-9+1|
=-1+2-8÷8
=-1+2-1
=0.
=-3-4-11+9
=-18+9
=-9;
(2)-0.5-(-3
| 1 |
| 4 |
| 1 |
| 2 |
=(-0.5-7
| 1 |
| 2 |
=-8+6
=-2;
(3)(
| 1 |
| 2 |
| 5 |
| 6 |
| 7 |
| 12 |
=-
| 1 |
| 2 |
| 5 |
| 6 |
| 7 |
| 12 |
=-18-30+21
=-27;
(4)-14-(-5
| 1 |
| 2 |
| 4 |
| 11 |
=-1+2-8÷|-9+1|
=-1+2-8÷8
=-1+2-1
=0.
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