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linhnabinguyen
2 năm trước
Bài 5. Mô tả tập hợp A các số tự nhiên không vượt quá 150, chia cho 7 dư 3 bằng hai cách đã học. Tập hợp A có bao nhiêu phần tử. Bài 6. Tìm số tự nhiên a, biết số a chia cho 39 còn dư 37, và khi chia số a cho 13 được thương bằng số dư. Bài 7. Tìm số bị chia và số chia, biết rằng: Thương bằng 6, số dư bằng 49, tổng của số bị chia, số chia và số dư bằng 595 Bài 8. Tích của hai số là 6210. Nếu giảm một thừa số đi 7 đơn vị thì tích mới là 5265. Tìm các thừa số của tích. Bài 9. Trong một phép chia có số bị chia là 155; số dư là 12. Tìm số chia và thương. Bài 10. So sánh các số sau, số nào lớn hơn ?
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