Toán cơ bản Ví dụ

$36.78 \div 2.4$

Bước 1

Lập bài toán chia ở dạng phép chia số lớn.

$2$

$4$

$3$

$6$

$7$

$8$

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.

$2$

$4$

$3$

$6$

$7$

$8$

Bước 3

Chia $36$ cho $24$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$
$2$	$4$	$3$	$6$	$7$	.	$8$

Bước 4

Nhân chữ số mới nhất của thương số $(1)$ với số chia $24$ .

			$1$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$

Bước 5

Trừ $24$ khỏi $36$ .

			$1$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$

Bước 6

Hạ số tiếp theo của số bị chia xuống.

			$1$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$

Bước 7

Chia $127$ cho $24$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$

Bước 8

Nhân chữ số mới nhất của thương số $(5)$ với số chia $24$ .

			$1$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$

Bước 9

Trừ $120$ khỏi $127$ .

			$1$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$

Bước 10

Hạ số tiếp theo của số bị chia xuống.

			$1$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

Bước 11

Chia $78$ cho $24$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

Bước 12

Nhân chữ số mới nhất của thương số $(3)$ với số chia $24$ .

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$

Bước 13

Trừ $72$ khỏi $78$ .

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

Bước 14

Thêm một $0$ vào cuối số bị chia.

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

Bước 15

Hạ số tiếp theo của số bị chia xuống.

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

Bước 16

Chia $60$ cho $24$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

Bước 17

Nhân chữ số mới nhất của thương số $(2)$ với số chia $24$ .

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$

Bước 18

Trừ $48$ khỏi $60$ .

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$

Bước 19

Thêm một $0$ vào cuối số bị chia.

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$

Bước 20

Hạ số tiếp theo của số bị chia xuống.

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$	$0$

Bước 21

Chia $120$ cho $24$ . Đặt chữ số này vào thương số trên biểu tượng chia.

			$1$	$5$	.	$3$	$2$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$	$0$

Bước 22

Nhân chữ số mới nhất của thương số $(5)$ với số chia $24$ .

			$1$	$5$	.	$3$	$2$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$	$0$
					$-$	$1$	$2$	$0$

Bước 23

Trừ $120$ khỏi $120$ .

			$1$	$5$	.	$3$	$2$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$	$0$
					$-$	$1$	$2$	$0$
								$0$

Bước 24

Kết quả của phép chia của $36.78 \div 2.4$ là $15.325$ .

$15.325$

			$1$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$

			$1$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$

			$1$	$5$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$

			$1$	$5$	.	$3$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$

			$1$	$5$	.	$3$	$2$
$2$	$4$	$3$	$6$	$7$	.	$8$	$0$	$0$
	$-$	$2$	$4$
		$1$	$2$	$7$
	$-$	$1$	$2$	$0$
				$7$	$8$
				$-$	$7$	$2$
						$6$	$0$
					$-$	$4$	$8$
						$1$	$2$