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

Toán Lớp 5: Pauline has m cards. Sarah has 3 times as many cards as Pauline. Ivy has 22 more cards than Pauline while Casey has (m + 12) more cards

Tháng Một 18, 2023 Toán học 1 Comment 0 views

Toán Lớp 5: Pauline has m cards. Sarah has 3 times as many cards as Pauline. Ivy has 22 more cards than
Pauline while Casey has (m + 12) more cards than Sarah.
(a) How many cards do they have altogether? Express your answer in terms of m.
(b) If they share all the cards equally, how many cards does each girl get? Express your
answer in terms of m.

Comments ( 1 )

  1. thienthanh
    thienthanh
    18 Tháng Một, 2023 at 7:03 chiều
    Reply
    a)Vì Pauline có m thẻ nên Sarah có mx3 thẻ.
    Vì Pauline có m thẻ nên Ivy có m+22 thẻ.
    Vì Sarah có mx3 thẻ nên Casey có mx3+m+12=mx(3+1)+12=mx4+12 thẻ.
    Họ có tất cả số thẻ là:
    m+mx3+m+22+mx4+12=mx(1+3+1+4)+(22+12)
    =mx9+36=mx9+9×4=(m+4)x9(thẻ)
    b)Nếu chia đều thì mỗi người nhận được:
    (m+4)x9:4=(mx9+4×9):4=(mx9+36):4
    =mx9/4+9(thẻ)

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

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