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

Toán Lớp 5: a 3/5×2/3÷1/2. b 7/8÷(14/3+7/2) +4/28

Home/ Toán Lớp 5: a 3/5×2/3÷1/2. b 7/8÷(14/3+7/2) +4/28

Toán Lớp 5: a 3/5×2/3÷1/2. b 7/8÷(14/3+7/2) +4/28

Tháng Chín 12, 2022 Toán học 2 Comments 0 views

Toán Lớp 5: a 3/5×2/3÷1/2. b 7/8÷(14/3+7/2) +4/28

Comments ( 2 )

  1. danvanthu
    danvanthu
    12 Tháng Chín, 2022 at 7:15 chiều
    Reply
    a)
    3/5×2/3:1/2
    =2/5:1/2
    =2/5×2/1
    =4/5
    b)
    7/8:(14/3+7/2)+4/28
    =7/8:(28/6+21/6)+4/28
    =7/8:49/6+4/28
    =7/8×6/49+4/28
    =3/28+4/28
    =7/28
    =1/4
     

  2. tuenhioanh
    tuenhioanh
    12 Tháng Chín, 2022 at 7:15 chiều
    Reply
    a)3/5 xx 2/3 : 1/2
    =3/5 xx 2/3 xx 2
    =(3xx2xx2)/(5xx3xx1)
    =4/5
    b)7/8 : (14/3+7/2)+4/28
    =7/8 : (28/6 + 21/6)+4/28
    =7/8 : 49/6 +4/28
    =7/8 xx 6/49 + 4/28
    = 3/28 + 4/28
    =7/28=1/4
     

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

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