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lananh2812hy
2 năm trước
Bài 1 : tính giá trị của biểu thức sau khi m=5 A, 50 0 : m - 25 B , m x 25 + m x 176 - m Bài 2 hình bình hành có diện tích 1230cm2 . biết chiều cao là 30cm . tính cạnh đáy hình bình hành đó . Bài 3 : tìm y A, y : 125 = 207 B , 1250 : y = 25 C , 7542 - y = 2457 + 1999 Bài 4 : 12kg 30g = ...g 5 m² 3 dm² = ...thế kỉ... Năm 2 tấn 3 yến = ....kg 154800cm² = ....dm² Bài 5 : một nông trại có 60 con bò , mỗi con bò giá 15 triệu . nông trại đó đã bán đ.c 36 con bò . hỏi số bò đó bao nhiêu tiền ?
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