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

Toán Lớp 6: (-37) . (1-382) – 382 . 37 (65.4) – (43.4) – (12-4)

Toán Lớp 6: (-37) . (1-382) – 382 . 37
(65.4) – (43.4) – (12-4)

Comments ( 2 )

  1. Giải đáp:
     $a) (-37).(1-382)-382.37$
    $= (-37).[(1-382)+382]$
    $= (-37).[(-381)+328]$
    $= (-37).1$
    $=-37$
    $b) (65.4)-(43.4)-(12-4)$
    $= 260-172-12+4$
    $= 88+(-8)$
    $= 80$
     

  2. Giải đáp + giải thích các bước giải:
    $\text{}$
    a) ( -37 ) . ( 1 – 382 ) – 382 . 37
    = ( -37 ) . ( -381 ) – 382 . 37
    = 37 . 381 – 382 . 37
    = 37 . ( 381 – 382 )
    = 37 . ( -1 )
    = -37
    b) ( 65 . 4 ) – ( 43 . 4 ) – ( 12 – 4 )
    = [( 65 – 43 ) . 4] – ( 12 – 4 )
    = [22 . 4] – 8
    = 88 – 8
    = 80

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

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