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

Toán Lớp 6: Các bạn giúp mk với ạ: Bài 1: Thực hiện các phép tính(tính nhanh nếu có thể) a/ 4 . 52 – 32 : 24 b/5 . 42 – 18 : 32 c/ 62 : 4 . 3 + 2 .

Home/ Toán Lớp 6: Các bạn giúp mk với ạ: Bài 1: Thực hiện các phép tính(tính nhanh nếu có thể) a/ 4 . 52 – 32 : 24 b/5 . 42 – 18 : 32 c/ 62 : 4 . 3 + 2 .

Toán Lớp 6: Các bạn giúp mk với ạ: Bài 1: Thực hiện các phép tính(tính nhanh nếu có thể) a/ 4 . 52 – 32 : 24 b/5 . 42 – 18 : 32 c/ 62 : 4 . 3 + 2 .

Tháng Mười Hai 9, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: Các bạn giúp mk với ạ:
Bài 1: Thực hiện các phép tính(tính nhanh nếu có
thể)
a/ 4 . 52 – 32 : 24
b/5 . 42 – 18 : 32
c/ 62 : 4 . 3 + 2 .52
d/ 80 – ( 4 . 52 – 3 .23)
e/ 160 – ( 23 . 52 – 6 . 25 )
f/ 5871 : [ 928 – ( 247 – 82 . 5 )
g/ 1024 : (17. 25 + 15. 25)
h/23 . 75 + 25. 23 + 180
i/ 24 . 5 – [ 131 – ( 13 – 4 )2 ]
j/ [160.(730 – 700) : 24 – 42] . 13
k/ (32. 17 + 32. 38 + 55)
l/(23 . 93 – 23 . 13)
m/ 2. 512 : 172 + (8. 52 – 24. 32) : 56 + 20090
n/ 100 : { 250 : [ 450 – ( 4 . 53- 22. 25)]}
Bài 2: Tìm số tự nhiên x, biết:
a/ 128 – 3( x + 4 ) = 23
b/ [( 4x + 28 ).3 + 55] : 5 = 35
c/ (12x – 43 ).83 = 4.84
d/ 123 – 5.( x + 4 ) = 38
e/ ( 3x – 24 ) .73 = 2.74
f/ [308 – ( x – 6)]. 15 = 1545
g/ 720 : [ 41 – ( 2x – 5 )] = 23.5
h/ [(x – 3) .6 + 33] : 3 = 15
i/(x – 4)3 = 27
j/(5x -2)2 = 64
k/ (2x – 1)4 = 81
l/ (x -2)2 = 1
m/ (x – 1)5 = 32
n/ (4x – 3)3 = 125
p/ [ (250 – 25) : 15] : x = (450 – 60): 130.
Bài 3: Tìm x, biết:
a) 2(x- 51) = 2.23 + 20
b) 200 – (2x + 6) = 43
c) ( 12x – 43 ).83 = 4.84
d) 5x + x = 39 – 311:39
e) 7x – 2x = 617: 615 + 44 : 11
f) 0 : x = 0
g) 4x = 64
h) 9x- 1 = 9
i) 2x : 25 = 1
j) 3x + 2 + 3x = 10
k) 36 – ( 2x – 1 )2 = 30. 31.32

Comments ( 2 )

  1. dongoclandiem
    dongoclandiem
    9 Tháng Mười Hai, 2022 at 8:18 sáng
    Reply
    Giải đáp + Lời giải và giải thích chi tiết:
    Bài 1: 
    a) 4 . 5² – 32 : 2^4
    = 4 . 25 – 32 : 16
    = 100 – 2
    = 98
    b) 5 . 4² – 18 : 3²
    = 5 . 16 – 18 : 9
    = 80 – 2
    = 78
    c) 62 : 4 . 3 + 2,52
    = 15,5 . 3 + 2,52
    = 46,5 + 2,52
    = 49,02
    d) 80 – (4 . 52 – 3 . 32)
    = 80 – (208 – 96)
    = 80 – 112
    = – 32
    e) 160 – (2³ . 5² – 6 . 25)
    = 160 – (8 . 25 – 6 . 25)
    = 160 – 25 (8 – 6)
    = 160 – 200 + 150
    = 110
    f) 5871 : [ 928 – (247 – 82) . 5]
    = 5871 : ( 928 – 165 . 5)
    = 5871 : (928 – 825)
    = 5871 : 103
    = 57
    g) 1024 : (17 . 25 + 15 . 25)
    = 1024 : [25 . (17 + 15)]
    = 1024 : (25 . 32)
    = 1024 : 800
    = 1,28
    h) 23 . 75 + 25 . 23 + 180
    = 23 . (75 + 25) + 180
    = 23 . 100 + 180
    = 2300 + 180
    = 2480
    i) 2^4 . 5 – [131 – (13 – 4)²]
    = 16 . 5 – [131 – 81]
    = 80 – 50
    = 30
    j) [160 . (730 – 700) : 2^4 – 4²] . 13
    = (160 . 30 : 16 – 16 ) . 13
    = 284 . 13
    = 3692
    k) 32 . 17 + 32 . 38 + 55
    = 544 + 1216 + 55
    = 1815
    l) 23 . 93 – 23 . 13
    = 23 ( 93 – 13)
    = 23 . 80
    = 1840
    m) 2 . 512 : 172 + (8 . 25 – 24 . 32) : 56 + 20090
    = 1024 : 172 + (200 – 768) : 56 + 20090
    = 256/43 – 71/7 + 20090
    = -1261/301 + 20090
    = 20085,81063
    n) 100 : {250 : [450 – (4 . 5³ – 2² . 25)]}
    = 100 : {250 : [450 – (4 . 125 – 4 . 25)]}
    = 100 : [ 250 : (450 – 400)]
    = 100 : (250 : 50)
    = 100 : 5
    = 20
    Bài 2:
    a) 128 – 3 (x + 4) = 23
    3 (x + 4) = 105
    x + 4 = 35
    x = 31
    b) [(4x + 28) . 3 + 55] : 5 = 35
    (4x + 28) . 3 + 55 = 175
    (4x + 28) . 3 = 120
    4x + 28 = 40
    4x = 12
    x = 3
    c) (12x – 43) . 83 = 4 . 84
    (12x – 43) . 84 = 336
    12x – 43 = 4
    12x = 47
    x = 47/12
    d) 123 – 5 (x + 4) = 38
    5 (x + 4) = 85
    x + 4 = 17
    x = 13
    e) (3x – 24) . 73 = 2 . 74
    (3x – 24) . 73 = 148
    3x – 24 = 148/73
    3x = 1900/73
    x = 1900/219
    f) [308 – (x – 6)] . 15 = 1545
    308 – (x – 6) = 103
    x – 6 = 205
    x      = 205 + 6
    x      = 211
    g) 720 : [41 – (2x – 5)] = 23 . 5
    720 : [41 – (2x – 5)] = 115
    41 – (2x – 5) = 144/23
    2x – 5 = 799/23
    2x = 914/23
    x = 457/23
    h) [(x – 3) . 6 + 33] : 3 = 15
    (x – 3) . 6 + 38 = 45
    (x – 3) . 6 = 7
    x – 3 = 7/6
    x = 25/6
    i) (x – 4) . 3 = 27
    x – 4 = 9
    x = 13
    j) (5x – 2) . 2 = 64
    5x – 2 = 27
    5x = 29
    x = 29/5
    k) (2x – 1) . 4 = 81
    2x – 4 = 81/4
    2x = 97/4
    x = 97/8
    l) (x – 2) . 2 = 1
    x – 2 = 1/2
    x = 5/2
    m) (x – 1) . 5 = 32
    x – 1 = 32/5
    x = 37/5
    n) (4x – 3) . 3 = 125
    4x – 3 = 125/3
    4x = 134/3
    x = 67/7
    p) [(250 – 25) : 15] : x = (450 – 60) : 130
    (225 : 15) : x = 390 : 130
    15 : x = 3
    x = 5
    Bài 3:
    a) 2(x – 51) = 2 . 23 + 20
    2 (x – 51) = 66
    x – 51 = 33
    x = 84
    b) 200 – (2x + 6) = 43
    2x + 6 = 157
    2x = 151
    x = 151/2
    c) (12x – 43) . 83 = 4 . 84
    (12x – 43) . 83 = 336
    12x – 43 = 336/83
    12x = 3905/83
    x = 3905/996
    d) 5x + x = 39 – 311 : 39
    6x = 1210/39
    x = 605/177
    e) 7x – 2x = 617 : 615 + 44 : 11
    5x = 3077/615
    x = 3077/3075
    x = 3077/3075
    f) 0 : x = 0
    x  0
    h) 4x = 64
    x = 64 : 4
    x = 16
    i) 2x : 25 = 1
    2x = 25
    x = 25/2
    j) 3x + 2 + 3x = 10
    3x + 3x = 10 – 2
    6x = 8
    x = 4/3
    k) 36 – (2x – 1) . 2 = 30 . 31 . 32
    36 – (2x – 1) . 2 = 29760
    (2x – 1) . 2 = – 29724
    2x – 1= – 14862
    2x = -14861
    x = – 14861/2
    x = – 14861/2

  2. huongtructram
    huongtructram
    9 Tháng Mười Hai, 2022 at 8:17 sáng
    Reply
    Giải đáp: + Lời giải và giải thích chi tiết:
    Bài 1: 
    a). 4 . 5² – 32 : 2^4
    = 4 . 25 – 32 : 16
    = 100 – 2
    = 98
    b). 5 . 4² – 18 : 3²
    = 5 . 16 – 18 : 9
    = 80 – 2
    = 78
    c). 62 : 4 . 3 + 2,52
    = 15,5 . 3 + 2,52
    = 46,5 + 2,52
    = 49,02
    d). 80 – (4 . 52 – 3 . 32)
    = 80 – (208 – 96)
    = 80 – 112
    = – 32
    e). 160 – (2³ . 5² – 6 . 25)
    = 160 – (8 . 25 – 6 . 25)
    = 160 – 25 (8 – 6)
    = 160 – 200 + 150
    = 110
    f). 5871 : [ 928 – (247 – 82) . 5]
    = 5871 : ( 928 – 165 . 5)
    = 5871 : (928 – 825)
    = 5871 : 103
    = 57
    g). 1024 : (17 . 25 + 15 . 25)
    = 1024 : [25 . (17 + 15) ]
    = 1024 : (25 . 32)
    = 1024 : 800
    = 1,28
    h). 23 . 75 + 25 . 23 + 180
    = 23 . (75 + 25) + 180
    = 23 . 100 + 180
    = 2300 + 180
    = 2480
    i). 2^4 . 5 – [131 – (13 – 4)²]
    = 16 . 5 – [131 – 81]
    = 80 – 50
    = 30
    j). [160 . (730 – 700) : 2^4 – 4²] . 13
    = (160 . 30 : 16 – 16 ) . 13
    = 284 . 13
    = 3692
    k). 32 . 17 + 32 . 38 + 55
    = 544 + 1216 + 55
    = 1815
    l). 23 . 93 – 23 . 13
    = 23 ( 93 – 13)
    = 23 . 80
    = 1840
    m). 2 . 512 : 172 + (8 . 25 – 24 . 32) : 56 + 20090
    = 1024 : 172 + (200 – 768) : 56 + 20090
    = 256/43 – 71/7 + 20090
    = -1261/301 + 20090
    = 20085,81063
    n). 100 : {250 : [450 – (4 . 5³ – 2² . 25)]}
    = 100 : { 250 : [450 – (4 . 125 – 4 . 25)]}
    = 100 : [ 250 : (450 – 400)]
    = 100 : (250 : 50)
    = 100 : 5
    = 20
    Bài 2: 
    a). 128 – 3 (x + 4) = 23
    ⇔ 3 (x + 4) = 105
    ⇔ x + 4 = 35
    ⇔ x = 31
    Vậy x = 31
    b). [(4x + 28) . 3 + 55] : 5 = 35
    ⇔ (4x + 28) . 3 + 55 = 175
    ⇔ (4x + 28) . 3 = 120
    ⇔ 4x + 28 = 40
    ⇔ 4x = 12
    ⇔ x = 3
    Vậy x = 3
    c). (12x – 43) . 83 = 4 . 84
    ⇔ (12x – 43) . 84 = 336
    ⇔ 12x – 43 = 4
    ⇔ 12x = 47
    ⇔ x = 47/12
    Vậy x = 47/12
    d). 123 – 5 (x + 4) = 38
    ⇔ 5 (x + 4) = 85
    ⇔ x + 4 = 17 
    ⇔ x = 13
    Vậy x = 13
    e). (3x – 24) . 73 = 2 . 74
    ⇔ (3x – 24) . 73 = 148
    ⇔ 3x – 24 = 148/73
    ⇔ 3x = 1900/73
    ⇔ x = 1900/219
    Vậy x = 1900/219
    f). [308 – (x – 6)] . 15 = 1545
    ⇔ 308 – (x – 6) = 103
    ⇔ x – 6 = 205
    ⇔ x = 211
    Vậy x = 211
    g). 720 : [41 – (2x – 5)] = 23 . 5
    ⇔ 720 : [41 – (2x – 5)] = 115
    ⇔ 41 – (2x – 5) = 144/23
    ⇔ 2x – 5 = 799/23
    ⇔ 2x = 914/23
    ⇔ x = 457/23
    Vậy x = 457/23
    h). [(x – 3) . 6 + 33] : 3 = 15
    ⇔(x – 3) . 6 + 38 = 45
    ⇔ (x – 3) . 6 = 7
    ⇔ x – 3 = 7/6
    ⇔x = 25/6
    Vậy x = 25/6
    i). (x – 4) . 3 = 27
    ⇔ x – 4 = 9
    ⇔ x = 13
    Vậy x = 13
    j). (5x – 2) . 2 = 64
    ⇔ 5x – 2 = 27
    ⇔ 5x = 29
    ⇔ x = 29/5
    Vậy x = 29/5
    k). (2x – 1) . 4 = 81
    ⇔ 2x – 4 = 81/4
    ⇔ 2x = 97/4
    ⇔ x = 97/8
    Vậy x = 97/8
    l). (x – 2) . 2 = 1
    ⇔ x – 2 = 1/2
    ⇔ x = 5/2
    Vậy x = 5/2 
    m). (x – 1) . 5 = 32
    ⇔ x – 1 = 32/5
    ⇔ x = 37/5
    Vậy x = 37/5
    n). (4x – 3) . 3 = 125
    ⇔ 4x – 3 = 125/3
    ⇔ 4x = 134/3
    ⇔ x = 67/7
    Vậy x = 67/7
    p). [(250 – 25) : 15] : x = (450 – 60) : 130
    ⇔ (225 : 15) : x = 390 : 130
    ⇔ 15 : x = 3
    ⇔ x = 5
    Vậy x = 5
    Bài 3:
    a). 2(x – 51) = 2 . 23 + 20
    ⇔ 2 (x – 51) = 66
    ⇔ x – 51 = 33
    ⇔ x = 84
    Vậy x = 84
    b). 200 – (2x + 6) = 43
    ⇔ 2x + 6 = 157
    ⇔ 2x = 151
    ⇔ x = 151/2
    Vậy x = 151/2
    c). (12x – 43) . 83 = 4 . 84
    ⇔ (12x – 43) . 83 = 336
    ⇔ 12x – 43 = 336/83
    ⇔ 12x = 3905/83
    ⇔ x = 3905/996
    Vậy x = 3905/996
    d). 5x + x = 39 – 311 : 39
    ⇔ 6x = 1210/39
    ⇔ x = 605/177
    Vậy x = 605/177
    e). 7x – 2x = 617 : 615 + 44 : 11
    ⇔ 5x = 3077/615
    ⇔ x = 3077/3075
    Vậy x = 3077/3075
    f). 0 : x = 0
    x $\neq$ 0
    h). 4x = 64 
    ⇔ x = 16
    Vậy x = 16
    i). 2x : 25 = 1
    ⇔ 2x = 25
    ⇔ x = 25/2
    Vậy x = 25/2
    j). 3x + 2 + 3x = 10
    ⇔ 3x + 3x = 10 – 2
    ⇔ 6x = 8
    ⇔ x = 4/3
    Vậy x = 4/3
    k). 36 – (2x – 1) . 2 = 30 . 31 . 32
    ⇔ 36 – (2x – 1) . 2 = 29760
    ⇔ (2x – 1) . 2 = – 29724
    ⇔ 2x – 1= – 14862
    ⇔ 2x = -14861
    ⇔ x = – 14861/2
    Vậy x = – 14861 / 2

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

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