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

Toán Lớp 5: bài 1 : a, 1002 x 9 – 18 b, 8 x 427 x 3 + 6 x 573 x 4 c, 2008 x 867 + 2009 x 133

Home/ Toán Lớp 5: bài 1 : a, 1002 x 9 – 18 b, 8 x 427 x 3 + 6 x 573 x 4 c, 2008 x 867 + 2009 x 133

Toán Lớp 5: bài 1 : a, 1002 x 9 – 18 b, 8 x 427 x 3 + 6 x 573 x 4 c, 2008 x 867 + 2009 x 133

Tháng Hai 10, 2023 Toán học 2 Comments 0 views

Toán Lớp 5: bài 1 :
a, 1002 x 9 – 18
b, 8 x 427 x 3 + 6 x 573 x 4
c, 2008 x 867 + 2009 x 133

Comments ( 2 )

  1. khanhlanchau
    khanhlanchau
    10 Tháng Hai, 2023 at 7:22 chiều
    Reply
    a) 1002 xx9 – 18
    =1002 xx 9 – 9 xx 2
    = 9 xx ( 1002 – 2)
    = 9 xx 1000
    = 9000
    ——————————–
    b) 8 xx 427 xx 3 + 6 xx 573 xx 4
    = ( 8 xx 3) xx 427 + ( 6 xx 4) xx 573
    = 24 xx 427 + 24 xx 573
    = 24 xx ( 427 + 573)
    = 24 xx 1000
    = 24000
    —————————————–
    c) 2008 xx 867 + 2009 xx 133
    = 2008 xx 867 + (2008+1) xx 133 + 133
    = 2008 xx 867 + 2008 xx 133 + 1 xx 133
    = 2008 xx ( 867 + 133) + 133
    = 2008 xx 1000 + 133
    = 2008 000 + 133
    = 2008 133

  2. aivilanlan
    aivilanlan
    10 Tháng Hai, 2023 at 7:22 chiều
    Reply
    a, 1002 × 9 – 18
    = 1002 × 9 – 9 × 2
    = 9 × (1002 – 2)
    = 9 × 1000 = 9000
    b, 8 × 427 × 3 + 6 × 573 × 4
    = 24 × 427 + 24 × 573
    = 24 × (427 + 573)
    = 24 × 1000
    = 24000
    c. 2008 × 867 + 2009 × 133
    = 2008 × 867 + 2008 × 133 + 133
    = 2008 × (867 + 133) + 133
    = 2008 × 1000 + 133
    = 2008000 + 133
    = 2008133

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

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