(0.8+1\2)×5\4 （22+11\12）÷ - 知识问答

(0.8+1\2)×5\4 （22+11\12）÷11\24

1个回答

(0.8+12)×54
=(4/5+1/2)*5/4
=1+5/8
=13/8
（22+1112）÷1124
=(22+11/12)×24/11
=22×24/11+11/12×24/11
=48+2
=50

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