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

Toán Lớp 5: (4029 4568) + 8790= nhanh nha các bạn

Toán Lớp 5: (4029 4568) + 8790=
nhanh nha các bạn

Comments ( 2 )

  1. ( 4029 xx 4568 ) + 8790
    = ( 4000 + 29 ) xx 4568 + 8790
    = 4000 xx 4568 + ( 30 – 1 ) xx 4568 + 8790
    = 18272000 + 30 xx 4568 – 1 xx 4568 + 8790
    = 18272000 + 137040 – 4568 + 8790
    = 18409040 + 4222
    = 18413262
    ____________________________________________
    ( 4029 xx 4568 ) + 8790
    = 18404472 + 8790
    = 18413262

  2. (4029 × 4568) + 8790
    = 18404472 + 8790
    = 18413262

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