Bài giải
5 bịch có số kẹo là : 45 x 5 = 225 ( viên kẹo )
Đáp Số : 225 viên kẹo
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Lấy 45 x 5 = ... tự tính
cho biết có 5 bịch kẹo mỗi bịch có 45 viên kẹo