Chia một số thập phân cho một số thập phân
1. Ví dụ
Một thanh sắt dài 6,2dm cân nặng 23,56kg. Hỏi 1dm của thanh sắt đó cân nặng bao nhiêu ki-lô-gam?
Ta phải thực hiện phép chia: 23,56 : 6,2 ? (kg)
Ta có: 23,56 : 6,2 (23,56 × 10) : (6,2 × 10)
235,6 : 62
Thông thường ta đặt tính rồi tính rồi làm như sau:
Phần thập phân của số 6,2 có một chữ số.
Chuyển dấu phẩy của số 23,56 sang bên phải một chữ số được 235,6; bỏ dấu phẩy ở...
Đọc tiếp
Chia một số thập phân cho một số thập phân
1. Ví dụ
Một thanh sắt dài 6,2dm cân nặng 23,56kg. Hỏi 1dm của thanh sắt đó cân nặng bao nhiêu ki-lô-gam?
Ta phải thực hiện phép chia: 23,56 : 6,2 = ? (kg)
Ta có: 23,56 : 6,2 = (23,56 × 10) : (6,2 × 10)
= 235,6 : 62
Thông thường ta đặt tính rồi tính rồi làm như sau:
![](data:image/png;base64,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) 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Phần thập phân của số 6,2 có một chữ số.
Chuyển dấu phẩy của số 23,56 sang bên phải một chữ số được 235,6; bỏ dấu phẩy ở số 6,2 được 62.
Vậy: 23,56 : 6,2 = 3,8 (kg)
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2. Ví dụ 2
Thực hiện phép tính: 82,55 : 1,27 = ?
Ta đặt tính rồi làm như sau:
![](https://cdn3.olm.vn/upload/img_teacher/1206/img_teacher_2023-12-06_65707cacaa6e5.jpg) |
Phần thập phân của hai số 82,55 và 1,27 cùng có hai chữ số; bỏ dấu phẩy ở hai số đó được 8255 và 127.
Thực hiện phép chia 8255 : 127.
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3. Kết luận
Muốn chia một số thập phân cho một số thập phân, ta làm như sau:
Đếm xem có bao nhiêu chữ số ở phần thập phân của số chia thì chuyển dấu phẩy ở số bị chia sang bên phải bấy nhiêu chữ số.
Bỏ dấu phẩy ở số chia rồi thực hiện phép chia như chia cho số tự nhiên.