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

Toán Lớp 6: 2,5 x 4 + 5 x 4 – 2,5 x 5 +3 x 2,5

Toán Lớp 6: 2,5 x 4 + 5 x 4 – 2,5 x 5 +3 x 2,5

Comments ( 2 )

  1. 2,5 xx 4 + 5 xx 4 – 2,5 xx 5 + 3 xx 2,5
    = 2,5 xx (4 – 5 + 3) + 5 xx 4
    = 2,5 xx 2 + 5 xx 4
    = 5 + 20
    = 25
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  2. 2,5 xx 4 + 5 xx 4 – 2,5 xx 5 +3 xx 2,5
    =2,5 xx (4 –  5 +3 ) + 5 xx 4
    =2,5 xx 2 + 5 xx 4
    =2,5 xx 2 + 5 xx 4
    =25

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