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

Toán Lớp 5: 1. (16 x 6+ 16 x3 + 16) – 12 x 5 – 12 x 3 – 2 x12 2. 9 + 9 x 3 + 18 : 2 x 6 3. 2007 x 16 – 2007 x 14 – 2007 x 2 + 2007 4. 3 x 9 + 18 x

Home/ Toán Lớp 5: 1. (16 x 6+ 16 x3 + 16) – 12 x 5 – 12 x 3 – 2 x12 2. 9 + 9 x 3 + 18 : 2 x 6 3. 2007 x 16 – 2007 x 14 – 2007 x 2 + 2007 4. 3 x 9 + 18 x

Toán Lớp 5: 1. (16 x 6+ 16 x3 + 16) – 12 x 5 – 12 x 3 – 2 x12 2. 9 + 9 x 3 + 18 : 2 x 6 3. 2007 x 16 – 2007 x 14 – 2007 x 2 + 2007 4. 3 x 9 + 18 x

Tháng Mười 4, 2022 Toán học 2 Comments 0 views

Toán Lớp 5: 1. (16 x 6+ 16 x3 + 16) – 12 x 5 – 12 x 3 – 2 x12
2. 9 + 9 x 3 + 18 : 2 x 6
3. 2007 x 16 – 2007 x 14 – 2007 x 2 + 2007
4. 3 x 9 + 18 x 2 + 2 x 9 + 9
5. 64 x 4 + 18 x 4 + 9 x 8
6. 94 + 87 + 81 – 71 – 77 – 84
7. 2 – 4 + 6 – 8 + 10 – 12 + 14 – 16 + 18 – 20 + 22

Comments ( 2 )

  1. myngocla
    myngocla
    4 Tháng Mười, 2022 at 12:24 chiều
    Reply
    1.
    (16 xx 6 + 16 xx 3 + 16) – 12 xx 5 – 12 xx 3 – 2 xx 12
    = (16 xx 6 + 16 xx 3 + 16 xx 1) + (-12 xx 5 – 12 xx 3 – 2 xx 12)
    = [16 xx (6 + 3 + 1)] + [- 12 xx (5 + 3 + 2)]
    = [16 xx 10] + [- 12 xx 10]
    = 160 – 120
    = 40
    ———————
    2.
    9 + 9 xx 3 + 18 : 2 xx 6
    = 9 + 27 + 9 xx 6
    = 36 + 54
    = 90
    ———————-
    3.
    2007 xx 16 – 2007 xx 14 – 2007 xx 2 + 2007
    = 2007 xx 16 – 14 xx 2007 – 2 xx 2007 + 2007 xx 1
    = 2007 xx (16 – 14 – 2 + 1)
    = 2007 xx 1
    = 2007
    ————————
    4.
    3 xx 9 + 18 xx 2 + 2 xx 9 + 9
    = 3 xx 9 + 18 xx2 + 2 xx 9 + 9 xx 1
    = 9 xx (3 + 2 + 1) + 18 xx 2
    = 9 xx 6 + 18 xx 2
    = 54 + 36
    = 90
    ————————–
    5.
    64 xx 4 + 18 xx 4 + 9 xx 8
    = 4 xx (64 + 18) + 9 xx 8
    = 4 xx 82 + 9 xx 8
    = 328 + 72
    = 400
    —————————-
    6.
    94 + 87 + 81 – 71 – 77 – 84
    = (94 – 84) + (87 – 77) + (81 – 71)
    = 10 + 10 + 10
    = 10 xx 3
    = 30
    —————————-
    7.
    2 – 4 + 6 – 8 + 10 – 12 + 14 – 16 + 18 – 20 + 22
    = 22 – 20 + 18 – 16 + 14 – 12 + 10 – 8 + 6 – 4 + 2
    = (22 – 20) + (18 – 16) + (14 – 12) + (10 – 8) + (6 – 4) + 2
    = 2 + 2 + 2 + 2 + 2 + 2
    = 2 xx 6
    = 12

  2. hoquyly
    hoquyly
    4 Tháng Mười, 2022 at 12:24 chiều
    Reply
    Giải đáp:1) 40
    2) 90
    3) 2007
    4) 90
    5) 400
    6) 30
    7) 12
     
    Lời giải và giải thích chi tiết:
     

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

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