www.zmzy.net > 4.25/2.5#101%1.7的简便计算

4.25/2.5#101%1.7的简便计算

4.25除以2.5x101-1.7=1.7x(100+1-1)-1.7=1.7x100=1700

4.25÷2.5×101-1.7 =1.7×101-1.7 =1.7×(101-1) =1.7×100 =170

4.25÷25×101-1.7 =0.17×101-1.7 =0.17×101-0.17×10 =0.17×(101-10) =0.17×(90+1) =0.17×90+0.17 =15.47 扩展资料: 乘法: 1)乘法交换律:a*b=b*a 2)乘法结合律:a*b*c=(a*b)*c=a*(b*c) 3)乘法分配律:(a+b)*c=a*c+b*c;(a-b)*c=a*c-...

4.25÷2.5×101-1.7=170。 简便计算过程如下: 4.25÷2.5×101-1.7 =(4.25÷2.5)×101-1.7 =1.7×101-1.7 =1.7×(101-1) =1.7×100 =170 扩展资料: 乘法: 1)乘法交换律:a*b=b*a 2)乘法结合律:a*b*c=(a*b)*c=a*(b*c) 3)乘法分配律:(a+b)*c=a...

4.25+2.5*101+1.7 =4.25+1.7+2.5*(100+1) =5.95+2.5*100+2.5 =5.95+250+2.5 =258.45

4.25÷2.5×101-1.7 =(4.25÷2.5)×101-1.7 =1.7×101-1.7 =1.7×(101-1) =1.7×100 =170 扩展资料: 乘法简便计算定理: 1)乘法交换律:a*b=b*a 2)乘法结合律:a*b*c=(a*b)*c=a*(b*c) 3)乘法分配律:(a+b)*c=a*c+b*c;(a-b)*c=a*c-b*c 除法...

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