www.zmzy.net > 7/2×5/8%3/2÷8/5的简便计算

7/2×5/8%3/2÷8/5的简便计算

7/2*5/8-3/2÷8/5= 7/2*5/8-3/2*5/8=(7/2-3/2)*5/8=2*5/8=5/4

2分之7乘8分之5减2分之3除以5分之8=7/2*5/8-3/2*5/8=(7/2-3/2)*5/8=2*5/8=5/4

(7/2)*(8/5)-(3/2)*(8/5)=(8/5)*(7/2-3/2)=(8/5)*2=16/5.请采纳,谢谢.

7/2x5/8一3/2一:8/5的简便运算 7/2*5/8-3/2÷8/5 =7/2*5/8-3/2*5/8 =5/8*(7/2-3/2) =5/8*2 =5/4

7/2*5/8-3/2÷8/5=(7/2-3/2)*5/8=2*5/8=1又4分之1你好,本题已解答,如果满意请点右下角“采纳答案”.

7/8*3/8÷3/5=7/8*(3/8*5/3)=7/8*5/8=35/64

直接计算,不能简便:7÷5/8-5/8÷7=7*8/5-5/8*1/7=56/5-5/56=3111/280,=11又31/280.

0.875*2/5÷7/8*3/5=7/8*2/5*8/7*3/5=7/8*8/7*2/5*3/5=1*2/5*3/5=6/25

7.8÷1.3÷0.2=3.9÷1.3=3

(450-12-8)÷3+8=(450-12-9+1)*3分之1+8=450*3分之1-12*3分之1-9*3分之1+1*3分之1+8=150-4-3+3分之1+8=151又3分之1

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