如题所述
31.04/3.2－4.7这道题考的是小学的加减乘除混合运算要先算乘除，举个例子4分之2的倒数是2分之4，9.7－4.7等于5。
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第1个回答 2021-09-20
31.04÷3.2-4.7
=(3104/100)÷(320/100)-4.7
=(3104/100)×(100/320)-4.7
=(3104×100)/(320×100)-4.7
=3104/320-4.7
=(3104/2)/(320/2)-4.7
=1552/160-4.7
=(1552/2)/(160/2)-4.7
=776/80-4.7
=(776/2)/(80/2)-4.7
=388/40-4.7
=(388/2)/(40/2)-4.7
=194/20-4.7
=(194/2)/(20/2)-4.7
=97/10-4.7
=9.7-4.7
=5
=(3104/100)÷(320/100)-4.7
=(3104/100)×(100/320)-4.7
=(3104×100)/(320×100)-4.7
=3104/320-4.7
=(3104/2)/(320/2)-4.7
=1552/160-4.7
=(1552/2)/(160/2)-4.7
=776/80-4.7
=(776/2)/(80/2)-4.7
=388/40-4.7
=(388/2)/(40/2)-4.7
=194/20-4.7
=(194/2)/(20/2)-4.7
=97/10-4.7
=9.7-4.7
=5
第2个回答 2021-09-21
这一题没有办法简便计算，只有按照运算顺序先算乘法，然后算减法，按照这个步骤，一步一步来。
第3个回答 2021-09-20
这样的算式没有简便计算的办法，只能按照顺序来计算，不能够用简便计算
