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(125乘99加125)乘16这道题怎么做?简便运算

你好!简便算法是: (125X99+125)X16 =[125X(99+1))]X16 =[125X100]X16 =12500X16 =200000

99x125 =(100-1)x125=100x125-125=12500-125=12375

(125+50)×8 =125×8+50×8 =1000+400 =1400

简便计算(125x99十125)x16 =125x8x2x(99+1) =2000x100 =200000

125×25×16 =125×8×(25×2) =1000×50 =50000 ======================================== 柳浪闻莺各位芝麻竭诚为您解答 您的采纳是我们坚持百度的动力 ========================================

125×80+125×2=10000+250=10250

=87×(125×8)×(4×25)=87×1000×100=8700000

解: 99x8+99÷0.125 =99X8+(99x8÷0.125x8) =99x8+(99x8÷1) =99x8x2 =(100-1)x8x2 =100x16-16 =1584

(2.5-0.125)乘以4乘以0.8 =2.5×4×0.8-0.125×0.8×4 =10×0.8-0.1×4 =8-0.4 =7.6

(125加70)乘4简便运算 =(125+70)×4 =125×4+70×4 =500+280 =780

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