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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 4: tính phép tính sau : 1,5 + 789 + 4.56 – 7,5

Toán Lớp 4: tính phép tính sau : 1,5 + 789 + 4.56 – 7,5

Comments ( 2 )

  1. 1,5+789+4,56-7,5
    =1,5+789-7,5+4,56
    =1,5+(789-7,5)+4,56
    =1,5+781,5+4,56
    =(1,5+781,5)+4,56
    =783+4,56
    =787,56.

  2. 1,5 + 789 + 4,56 – 7,5
    =1,5+789−7,5+4,56
    =1,5+(789−7,5)+4,56
    =1,5+781,5+4,56
    =(1,5+781,5)+4,56
    =783+4,56
    =787,56.

    toan-lop-4-tinh-phep-tinh-sau-1-5-789-4-56-7-5

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222-9+11+12:2*14+14 = ? ( )

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