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

Toán Lớp 6: Bài 1 : Tính a, (-37)+32.149-49.(-32) b, 41.(-310) + (-41).90.(-32)

Toán Lớp 6: Bài 1 : Tính
a, (-37)+32.149-49.(-32)
b, 41.(-310) + (-41).90.(-32)

Comments ( 2 )

  1.  

  2. a)(-37)+32.149-49.(-32)
    =(-37)+32.149-(-49).32
    =(-37)+32.149+49.32
    =32.(149+49)+(-37)
    =32.198+(-37)
    =6336+(-37)
    =6299
    b)41.(-310) + (-41).90.(-32)
    =41.(-310)+41.(-90).(-32)
    =41.(-310)+41.2880
    =41.(2880-310)
    =41.2570
    =105370

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