(1)-33×(-2)+42÷(-2)3÷10-|-22|÷5;(2)(-22)÷(-2÷12)-|-3|×(-1)2013;(3)(-56)
(1)-33×(-2)+42÷(-2)3÷10-|-22|÷5;(2)(-22)÷(-2÷12)-|-3|×(-1)2013;(3)(-56)+(-12+8)+(-2)×...
(1)-33×(-2)+42÷(-2)3÷10-|-22|÷5;(2)(-22)÷(-2÷12)-|-3|×(-1)2013;(3)(-56)+(-12+8)+(-2)×5+21;(4)(1.2+1.3)2×[(-2)2×14]2012÷18×0.52.
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(1)-33×(-2)+42÷(-2)3÷10-|-22|÷5
=-27×(-2)+16÷(-8)÷10-4÷5
=54-0.2-0.8
=53;
(2)(-22)÷(-2÷
)-|-3|×(-1)2013
=-4÷(-4)-3×(-1)
=1+3
=4;
(3)(-56)+(-12+8)+(-2)×5+21
=-56-4-10+21
=-70+21
=-49;
(4)(1.2+1.3)2×[(-2)2×
]2012÷
×0.52
=2.52×[4×
]2012÷
×0.25
=2.52×1×8×0.25
=6.25×2
=12.5.
=-27×(-2)+16÷(-8)÷10-4÷5
=54-0.2-0.8
=53;
(2)(-22)÷(-2÷
1 |
2 |
=-4÷(-4)-3×(-1)
=1+3
=4;
(3)(-56)+(-12+8)+(-2)×5+21
=-56-4-10+21
=-70+21
=-49;
(4)(1.2+1.3)2×[(-2)2×
1 |
4 |
1 |
8 |
=2.52×[4×
1 |
4 |
1 |
8 |
=2.52×1×8×0.25
=6.25×2
=12.5.
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