Câu 9: Đặt tính rồi tính ( 2 điểm)    

Đặt tính rồi tính:

12125 x 3       20516 x 4       10513 x 5       12008 x 6

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Đặt tính rồi tính:

27864 + 8026       52971 - 6205       3516 x 6       2082 : 9

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Đặt tính rồi tính:

8526 + 1954       67426 + 7358       9562 - 3836

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99900 - 9789       6204 x 6       8026 x 4

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Đặt tính rồi tính

3418 x 2       2527 x 3       1419 x 5       1914 x 5

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