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Môn: Toán. Lớp 4
Họ và tên:……………………………………………………Lớp 4….
Bài 1.Tính bằng cách thuận tiện:
a) 28400 : (100 x 311 – 310 x 100)
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b) + + + + +
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Bài 2: Tìm x
a) 4590: (x - 24 + 14) = 30 b) 61 x (126 : x) = 1281
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11
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25 19
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16 11
25
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16
5
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