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

Toán Lớp 6: a, 5871 : [ 928 – ( 247 – 82) . 5] b, 33. 75 + 25.33 – 280 c, 98. 31 + 98.24 + 98. 27 + 2.82 d, 8.9.14 +6 . 17.12 + 19.4. 18 e, ( 22 +

Home/ Toán Lớp 6: a, 5871 : [ 928 – ( 247 – 82) . 5] b, 33. 75 + 25.33 – 280 c, 98. 31 + 98.24 + 98. 27 + 2.82 d, 8.9.14 +6 . 17.12 + 19.4. 18 e, ( 22 +

Toán Lớp 6: a, 5871 : [ 928 – ( 247 – 82) . 5] b, 33. 75 + 25.33 – 280 c, 98. 31 + 98.24 + 98. 27 + 2.82 d, 8.9.14 +6 . 17.12 + 19.4. 18 e, ( 22 +

Tháng Chín 17, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: a, 5871 : [ 928 – ( 247 – 82) . 5]
b, 33. 75 + 25.33 – 280
c, 98. 31 + 98.24 + 98. 27 + 2.82
d, 8.9.14 +6 . 17.12 + 19.4. 18
e, ( 22 + 44 + 66 + .. + 1000). (95 . 222 – 190 . 111)
cứu em

Comments ( 2 )

  1. hienchaudiem
    hienchaudiem
    17 Tháng Chín, 2022 at 11:00 chiều
    Reply
    a) 5871 : [ 928 – ( 247 – 82) . 5] = 5871 : [ 928 – 825 ]
        5871 : [ 928 – ( 247 – 82) . 5] = 5871 : 103 = 57
    b) 33. 75 + 25.33 – 280 = 33 . ( 75 + 25) – 280
        33. 75 + 25.33 – 280 = 33 . 100 – 280                                          
        33. 75 + 25.33 – 280 = 3300 – 280 = 3020
    c) 98. 31 + 98.24 + 98. 27 + 2.82
    = 98 . ( 31 + 24 + 27 ) + 82 x 2
    = 98 . 82 + 82 . 2 = 82 . ( 98 + 2 ) 
    = 82 . 100 = 8200
    d) 8 . 9 . 14 + 6 . 17 . 12 + 19 . 4 . 18
    = 2 . 2 . 2 . 3 . 3 . 2 . 7 + 2 . 3 . 17 . 2 . 2 . 3 + 19 . 2 . 2 . 2 . 3 . 3
    = 8 . 9 . 7 + 9 . 8 . 17 + 19 . 8 . 9
    = 72 . 7 + 72 . 17 + 72 .19
    = 72 . ( 7 + 17 + 19 ) 
    = 72 . 43 = 3096
           Hình như câu e lỗi đề rồi bn ơi

  2. thienthanh
    thienthanh
    17 Tháng Chín, 2022 at 11:00 chiều
    Reply
    Giải đáp + Lời giải và giải thích chi tiết:
    a) 5871 : [928-(247-82)\times5].
    = 5871 : [ 928 – 825].
    = 5871 : [ 928 – ( 247-82)\times5].
    = 5871 : 103.
    = 57.
    b) 33\times75+25.33-280.
    = 33\times(75+25)-280.
    = 33. 75 + 25.33 – 280 = 33 . 100 – 280.
    = 33\times75+25\times33-280
    = 3300 – 280.
    = 3020.
    c) 98\times31 + 98\times24 + 98\times27 + 2\times82.
    = 98\times ( 31 + 24 + 27 ) + 82 \times 2.
    = 98\times82+82\times2.
    = 82\times(98+2).
    = 82 . 100.
    = 8200.
    d) 8\times9\times14 + 6\times17\times12 + 19\times4\times18.
    = 2\times4\times9\times14+2\times3\times17\times12+19\times2\times2\times18.
    = 36\times2\times14+36\times2\times17+36\times19\times2.
    = 36\times28+36\times34+36\times38.
    = 36\times(28+34+38).
    = 36\times100.
    = 3600.
    e) (22+44+66+…+1000)\times(95\times222-190\times111).
    = (22+44+66+…+1000)\times(95\times111\times2-190\times111).
    = (22+44+66+…+1000)\times(190\times111-190\times111).
    = (22+44+66+…+1000)\times[111\times(190-190)].
    = (22+44+66+…+1000)\times(111\times0).
    = (22+44+66+…+1000)\times0.
    = 0.

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

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