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

Toán Lớp 2: ghi dấu nhé ><= 2 x 2 ... 2 x 3 2 x 9 ... 2 x 3 2 x 10 ... 2 x 9

Toán Lớp 2: ghi dấu nhé ><= 2 x 2 ... 2 x 3 2 x 9 ... 2 x 3 2 x 10 ... 2 x 9

Comments ( 2 )

  1. Giải đáp:
    +) \underbrace{2xx2}_{4}<\underbrace{2xx3}_{6}
    +) \underbrace{2xx9}_{18}>\underbrace{2xx3}_{6}
    +) \underbrace{2xx10}_{20}>\underbrace{2xx9}_{18}

  2. 2 × 2 … 2 × 3
    2×2=4; 2×3=6
    Vì 4<6⇒2×2<2×3
    2 × 9 … 2 × 3
    2×9=18; 2×3=6
    Vì 18>6⇒2×9>2×3
    2 × 10 … 2 × 9
    2×10=20; 2×9=18
    Vì 20>18⇒2×10>2×9
     

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

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