
计算下列各题:(1)(+12)+(-23)-(-33)(2)?13?(1?0.5)×13×[2?(?3)2](3)(23?14?38+524)×48
计算下列各题:(1)(+12)+(-23)-(-33)(2)?13?(1?0.5)×13×[2?(?3)2](3)(23?14?38+524)×48...
计算下列各题:(1)(+12)+(-23)-(-33)(2)?13?(1?0.5)×13×[2?(?3)2](3)(23?14?38+524)×48
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(1)原式=(-11)+(+33)=22;
(2)原式=-1-0.5×
×(2?9),
=-1-
×
×(?7),
=-1+
,
=
;
(3)原式=
×48?
×48?
×48+
×48,
=32-12-18+10,
=12.
(2)原式=-1-0.5×
1 |
3 |
=-1-
1 |
2 |
1 |
3 |
=-1+
7 |
6 |
=
1 |
6 |
(3)原式=
2 |
3 |
1 |
4 |
3 |
8 |
5 |
24 |
=32-12-18+10,
=12.
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