题目内容
计算题:
(1)(-3)+(-4)-(+11)-(-9);
(2)3+50÷22×(-
)-1;
(3)(
-
)×12+(-1)2008÷(
-
);
(4)-14+〔1-(1-0.5×
)〕×|2-(-3)2|.
(1)(-3)+(-4)-(+11)-(-9);
(2)3+50÷22×(-
| 1 |
| 5 |
(3)(
| 3 |
| 4 |
| 7 |
| 6 |
| 3 |
| 5 |
| 2 |
| 3 |
(4)-14+〔1-(1-0.5×
| 1 |
| 3 |
①原式=-3-4-11+9
=-18+9
=-9;
②原式=3+50÷4×(-
)-1
=3-
-1
=-
;
③原式=
×12-
×12+1÷(-
)
=9-14-15
=-20;
④原式=-1+(1-
)×7
=-1+
=
.
=-18+9
=-9;
②原式=3+50÷4×(-
| 1 |
| 5 |
=3-
| 5 |
| 2 |
=-
| 1 |
| 2 |
③原式=
| 3 |
| 4 |
| 7 |
| 6 |
| 1 |
| 15 |
=9-14-15
=-20;
④原式=-1+(1-
| 5 |
| 6 |
=-1+
| 7 |
| 6 |
=
| 1 |
| 6 |
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