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

Toán Lớp 5: Tính nhanh 5/11+1/4+2/5+6/11+3/4+6/25+9/25

Toán Lớp 5: Tính nhanh
5/11+1/4+2/5+6/11+3/4+6/25+9/25

Comments ( 2 )

  1. Giải đáp:
    \frac{5}{11} + \frac{1}{4} + \frac{2}{5} + \frac{6}{11} + \frac{3}{4} + \frac{6}{25} + \frac{9}{25}
    = (\frac{5}{11} + \frac{6}{11}) + (\frac{1}{4} + \frac{3}{4}) + (\frac{2}{5} + \frac{6}{25} + \frac{9}{25})
    = 1 + 1 + (\frac{10}{25} + \frac{6}{25} + \frac{9}{25})
    = 2 + 1
    = 3
    Chúc học tốt!!!
     
     

  2. $\frac{5}{11}$ + $\frac{1}{4}$ + $\frac{2}{5}$ + $\frac{6}{11}$ +$\frac{3}{4}$ + $\frac{6}{25}$ + $\frac{9}{25}$
    = ( $\frac{5}{11}$ + $\frac{6}{11}$ ) + ( $\frac{1}{4}$ +$\frac{3}{4}$ ) + ( $\frac{6}{25}$ + $\frac{9}{25}$  + $\frac{2}{5}$ )
    = $\frac{11}{11}$ + $\frac{4}{4}$ + $\frac{25}{25}$ 
    = 1 + 1 + 1 
    = 3
                 CHÚC HỌC TỐT !
     

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

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