灵活计算. 952-952÷17(34-34×25)÷15(512+119)×12+7191.28×5.37-2.8×0.53727×1115+415÷72121×117×(2009×42×8
除法
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灵活计算.
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(1)952-952÷17,
=952-56,
=896;(2)(34-34×25)÷15,
=(34-310)÷15,
=920÷15,
=94;(3)(512+119)×12+719,
=512×12+119×12+719,
=5+1219+712,
=5+(1219+712),
=5+1,
=6;(4)1.28×5.37-2.8×0.537,
=1.28×5.37-0.28×5.37,
=(1.28-0.28)×5.37,
=1×5.37,
=5.37;(5)27×1115+415÷72,
=27×1115+415×27,
=27×(1115+415),
=27×1,
=27;(6)121×117×(2009×42×85),
=121×117×2009×42×85,
=2009×2×5,
=2009×(2×5),
=2009×10,
=20090.
