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

Toán Lớp 5: 1. Tính nhanh tổng sau : 3/2 + 3/4 + 3/8 + 3/16 + 3/32 + 3/64 + 3/128 + 3/256 + 3/512 + 3/1024

Tháng Tám 4, 2022 Toán học 2 Comments 0 views

Toán Lớp 5: 1. Tính nhanh tổng sau :
3/2 + 3/4 + 3/8 + 3/16 + 3/32 + 3/64 + 3/128 + 3/256 + 3/512 + 3/1024

Comments ( 2 )

  1. ngoclanhoa
    ngoclanhoa
    4 Tháng Tám, 2022 at 1:32 sáng
    Reply
    $#Momo gửi$
    Giải đáp: $\dfrac{26}{768}$
    Lời giải và giải thích chi tiết:
    $\dfrac{3}{2}$ + $\dfrac{3}{4}$ + $\dfrac{3}{8}$ + $\dfrac{3}{16}$ + $\dfrac{3}{32}$ + $\dfrac{3}{128}$ + $\dfrac{3}{256}$ + $\dfrac{3}{512}$ + $\dfrac{3}{1024}$
    ⇒($\dfrac{3}{2}$ + $\dfrac{3}{8}$) + ($\dfrac{3}{4}$ + $\dfrac{3}{16}$) + ($\dfrac{3}{32}$ +$\dfrac{3}{128}$) + (3,64+3,256) + $\dfrac{3}{512}$
    ⇒$\dfrac{4+ 6}{2}$ + $\dfrac{6}{16}$ + $\dfrac{6}{896}$ + $\dfrac{3}{512}$
    ⇒$\dfrac{10}{2}$ + $\dfrac{13}{056}$ + $\dfrac{3}{512}$
    ⇒$\dfrac{23}{256}$ + $\dfrac{3}{512}$
    ⇒$\dfrac{26}{768}$

  2. danvanthu
    danvanthu
    4 Tháng Tám, 2022 at 1:31 sáng
    Reply
    Giải đáp:
    (3/2+3/8) +( 3/4 =3/16) +( 3/32+ 3/128)+(3,64+3,256)+3/512
    = 4+6/2+6/16+6/896+3/512
    =10/2+13/056+3/512
    =23/256+3/512
    =26/768
     vote va cam on

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

Ðan Khanh

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