问题 解答题
(1)-33×(-2)+42÷(-2)3÷10-|-22|÷5;
(2)(-22)÷(-2÷
1
2
)-|-3|×(-1)2013
(3)(-56)+(-12+8)+(-2)×5+21;
(4)(1.2+1.3)2×[(-2)2×
1
4
]2012÷
1
8
×0.52
答案

(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÷

1
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×

1
4
]2012÷
1
8
×0.52

=2.52×[4×

1
4
]2012÷
1
8
×0.25

=2.52×1×8×0.25

=6.25×2

=12.5.

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