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

Toán Lớp 6: A,36×37+12×38×3+18×25×2 B, -28 +[16+(-213)]+|-28|+|-213| Giải hộ mik vs ạ

Toán Lớp 6: A,36×37+12×38×3+18×25×2
B, -28 +[16+(-213)]+|-28|+|-213|
Giải hộ mik vs ạ

Comments ( 2 )

  1. a, 36 xx 37 + 12 xx 38 xx 3 + 18 xx 25 xx 2
    = 36 xx 37 + 36 xx 38 + 36 xx 25
    = 36 xx ( 37 + 38 + 25 )
    = 36 xx 100
    = 3600
    b, – 28 + [ 16 + ( – 213 ) ] + | – 28 | + | – 213 |
    = – 28 + 16 + ( – 213 ) + 28 + 213
    = [ ( – 28 ) + 28 ] + [ ( – 213 ) + 213 ] + 16
    = 0 + 0 + 16
    = 0 + 16
    = 16

  2. a) 36 xx 37 + 12 xx 38 xx 3 + 18 xx 25 xx 2
    = 36 xx 37 + ( 12 xx 3) xx 38 + ( 18 xx 2) xx 25
    = 36 xx 37 + 36 xx 38 + 36 xx 25
    = 36 xx ( 37 + 38 + 25)
    = 36 xx 100
    = 3600
    b) -28 + [16 + (-213)] + |-28| + |-213|
    = -28 + 16 – 213 + 28 + 213
    = (-28 + 28) + (-213 + 213) + 16
    = 0 + 0 + 16
    = 16

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