Đại số sơ cấp Ví dụ

$5 \div 0.37$

Bước 1

Lập bài toán chia ở dạng phép chia số lớn.

$0$

$3$

$7$

$5$

Bước 2

Di chuyển số thập phân ở cả hai số cùng một số lượng vị trí cho đến khi số chia là một số nguyên không âm.

$3$

$7$

$5$

$0$

Bước 3

Chia $50$ cho $37$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$
$3$	$7$	$5$	$0$	$0$

Bước 4

Nhân chữ số mới nhất của thương số $(1)$ với số chia $37$ .

			$1$
$3$	$7$	$5$	$0$	$0$
	$-$	$3$	$7$

Bước 5

Trừ $37$ khỏi $50$ .

			$1$
$3$	$7$	$5$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$

Bước 6

Hạ số tiếp theo của số bị chia xuống.

			$1$
$3$	$7$	$5$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$

Bước 7

Chia $130$ cho $37$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$3$
$3$	$7$	$5$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$

Bước 8

Nhân chữ số mới nhất của thương số $(3)$ với số chia $37$ .

			$1$	$3$
$3$	$7$	$5$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$

Bước 9

Trừ $111$ khỏi $130$ .

			$1$	$3$
$3$	$7$	$5$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$

Bước 10

Thêm một $0$ vào cuối số bị chia.

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$

Bước 11

Hạ số tiếp theo của số bị chia xuống.

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

Bước 12

Chia $190$ cho $37$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

Bước 13

Nhân chữ số mới nhất của thương số $(5)$ với số chia $37$ .

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$

Bước 14

Trừ $185$ khỏi $190$ .

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

Bước 15

Thêm một $0$ vào cuối số bị chia.

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

Bước 16

Hạ số tiếp theo của số bị chia xuống.

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

Bước 17

Chia $50$ cho $37$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

Bước 18

Nhân chữ số mới nhất của thương số $(1)$ với số chia $37$ .

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$

Bước 19

Trừ $37$ khỏi $50$ .

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$

Bước 20

Thêm một $0$ vào cuối số bị chia.

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$

Bước 21

Hạ số tiếp theo của số bị chia xuống.

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$	$0$

Bước 22

Chia $130$ cho $37$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$3$	.	$5$	$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$	$0$

Bước 23

Nhân chữ số mới nhất của thương số $(3)$ với số chia $37$ .

			$1$	$3$	.	$5$	$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$	$0$
					$-$	$1$	$1$	$1$

Bước 24

Trừ $111$ khỏi $130$ .

			$1$	$3$	.	$5$	$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$	$0$
					$-$	$1$	$1$	$1$
							$1$	$9$

Bước 25

Kết quả của phép chia của $5 \div 0.37$ là $13.513 \dots$ .

$13.513 \dots$

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$

			$1$	$3$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$

			$1$	$3$	.	$5$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$

			$1$	$3$	.	$5$	$1$
$3$	$7$	$5$	$0$	$0$	.	$0$	$0$
	$-$	$3$	$7$
		$1$	$3$	$0$
	$-$	$1$	$1$	$1$
			$1$	$9$	$0$
			$-$	$1$	$8$	$5$
						$5$	$0$
					$-$	$3$	$7$
						$1$	$3$