99x31十31的简便运算

满梁胞4919999*11+11的简便运算 -
官通敬15310223871 ______ 999*11+11的简便运算999*11+11=11*(999+1)=11*1000=11000

满梁胞491999X33的简便运算 -
官通敬15310223871 ______ 99*33=100*33-1*33=3300-33=3267

满梁胞491999+38加38的简便运算 -
官通敬15310223871 ______ 38*99+38 =38*99+38*1 =38*(99+1) =38*100 =3800

满梁胞491999x33简便运算 -
官通敬15310223871 ______ 99x33 =(100-1)x33 =100x33-1x33 =3300-33 =3267

满梁胞49190.99x1·01简便运算 -
官通敬15310223871 ______ 原式=(1-0.01)复x(1+0.01)=1x1+1x0.01-0.01x1-0.01x0.01=1+0.01-0.01-0.0001=1-0.0001=0.9999 或者制=(1-0.01)x(1+0.01)=1²-0.1²=1-0.0001=0.9999 供参考.zhidao

满梁胞4919怎样算简便:99X22十33x34 -
官通敬15310223871 ______ 99X22十33x34 =33*3X22十33x34 =33*66+33x34 =33*(66+34) =33*100 =3300

满梁胞4919353x69十452x3|十99x19的简便算法 -
官通敬15310223871 ______ 353x69十452x31十99x19=353x69十(353+99)x31十99x19=353x69十353x31十99x31十99x19=353x(69+31)十99x(31十19)=353x100+99x50=35300+4950=40250

满梁胞4919用简便计算99*61+61 -
官通敬15310223871 ______ 运用乘法分配律ax(b+c)=ab+ac99X61+61=99X61+61X1=61X(99+1)=61X100=6100

满梁胞491999x51+51+51怎样简便计算? -
官通敬15310223871 ______ 简便计算99x51+51+51=(99+1)x51+51=100x51+51=5100+51=5151

满梁胞491932「275÷(13+31的简便运算)」 -
官通敬15310223871 ______ 32*[275÷(13+31)]=32*275÷44=4*4*2*11*25÷4÷11=(4*25)*(4÷4)*(11÷11)*2=100*1*1*2=200