A-A+
(1)-33×(-2)+42÷(-2)3÷10-|-22|÷5;(2)(-22)÷(-2÷1
问题详情
(1)-33×(-2)+42÷(-2)3÷10-|-22|÷5;
(2)(-22)÷(-2÷
(3)(-56)+(-12+8)+(-2)×5+21;
(4)(1.2+1.3)2×[(-2)2×
参考答案
(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÷12)-|-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)2×14]2012÷18×0.52
=2.52×[4×14]2012÷18×0.25
=2.52×1×8×0.25
=6.25×2
=12.5.
考点: