1.2x2.5+0.8x2.5的简便计算

万冠唯21161.2x2.5十0.8x2.5=2.5x(1.2+0.8)是运用的什么运算定律 -
訾初亲18944061592 ______ 1.2x2.5十0.8x2.5 =2.5x(1.2+0.8) 是运用的乘法分配律 =2.5*2 =5

万冠唯21161,2x2,5十0,8x2,5用简便方法计算 -
訾初亲18944061592 ______ =(1.2+0.8)*2.5 =2*2.5 =5

万冠唯21161.2x2.5+0.8x2.5怎么样简便计算? -
訾初亲18944061592 ______ 原式 =(1.2+0.8)x2.5 =2x2.5 =5 供参考.

万冠唯21161.2x2.5+0.8x2.5能简便的要简便 -
訾初亲18944061592 ______ 1.2x2.5+0.8x2.5能简便的要简便=2.5*(1.2+0.8)=2.5*2=5

万冠唯2116您好.请问1.2x2.5+0.8x2.5怎么样简便计算? -
訾初亲18944061592 ______ 1.2*2.5+0.8*2.5 =(1.2+0.8)*2.5 =2*2.5 =5

万冠唯21161.2乘2.5加o.8乘2.5用简便方法怎么做 -
訾初亲18944061592 ______ 1.2*2.5+0.8*2.5=(1.2+0.8)*2.5=2*2.5=5.请采纳,谢谢.

万冠唯2116简便计算1.2*2.5*2.5+0.8x2.5 -
訾初亲18944061592 ______ 1.2*2.5*2.5+0.8x2.5 =0.3*4*2.5*2.5+0.2*4*2.5 =0.3*(4*2.5)*2.5+0.2*(4*2.5) =0.3*10*2.5+0.2*10 =3*2.5+2 =7.5+2 =9.5

万冠唯21161.25X2.5十0.8X2.5的简便计算 -
訾初亲18944061592 ______ 1.25X2.5十0.8X2.5 =2.5X(1.25十0.8) =2.5X(2.0+0.05) =5+0.125 =5.125

万冠唯21161.2*2.5 0.08*28的简算怎么算 -
訾初亲18944061592 ______ 1.2x2.5=(1+0.2)x2.5=1x2.5+0.2x2.5=2.5+0.5=30.08x28=(0.1-0.02)x28=0.1x28-0.02x28=2.8-0.56=2.24

万冠唯2116用简便方法计算1·5x105?0·3x2·5x0·4?1·2x2·5+0·8x2·5? -
訾初亲18944061592 ______ 1.5x105=1.5*100+1.5*5=150+7.5=157.50.3x2.5x0.4=0.3x(2.5x0.4)=0.3*1=0.31.2x2.5+0.8x2.5=(1.2+0.8)x2.5=2x2.5=5