小马虎在计算“30+□÷5”时,先算了加法,后算除法,这样计算的结果比正确的结果相差______

2025-04-06 06:08:24
推荐回答(1个)
回答1:

64+□÷5,先算了加法,后算除法,是:
(64+□)÷5,
=64÷5+□÷5
=1多+□÷5;
(64+□÷5)-(1多+□÷5)
=64+□÷5-1多-□÷5
=(64-1多)+(□÷5-□÷5)
=四6+4
=四6.
结果与正确2结果相差四6.
故答案为:四6.