Preparazione all'algebra Esempi

$155.68 \div 2.8$

Passaggio 1

Imposta il problema della divisione nel formato in colonna.

$2$

$8$

$1$

$5$

$6$

$8$

Passaggio 2

Sposta il decimale dello stesso numero di posti in entrambi i numeri finché il divisore non è un numero intero.

$2$

$8$

$1$

$5$

$6$

$8$

Passaggio 3

Dividi $155$ per $28$ . Posiziona questa cifra nel quoziente sopra il simbolo di divisione.

				$5$
$2$	$8$	$1$	$5$	$5$	$6$	.	$8$

Passaggio 4

Moltiplica la cifra quoziente appena ottenuta $(5)$ per il divisore $28$ .

				$5$
$2$	$8$	$1$	$5$	$5$	$6$	.	$8$
		$1$	$4$	$0$

Passaggio 5

Sottrai $140$ da $155$ .

				$5$
$2$	$8$	$1$	$5$	$5$	$6$	.	$8$
		$1$	$4$	$0$
			$1$	$5$

Passaggio 6

Abbassa il numero successivo del dividendo.

				$5$
$2$	$8$	$1$	$5$	$5$	$6$	.	$8$
		$1$	$4$	$0$
			$1$	$5$	$6$

Passaggio 7

Dividi $156$ per $28$ . Posiziona questa cifra nel quoziente sopra il simbolo di divisione.

				$5$	$5$
$2$	$8$	$1$	$5$	$5$	$6$	.	$8$
		$1$	$4$	$0$
			$1$	$5$	$6$

Passaggio 8

Moltiplica la cifra quoziente appena ottenuta $(5)$ per il divisore $28$ .

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

Passaggio 9

Sottrai $140$ da $156$ .

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

Passaggio 10

Abbassa il numero successivo del dividendo.

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

Passaggio 11

Dividi $168$ per $28$ . Posiziona questa cifra nel quoziente sopra il simbolo di divisione.

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

Passaggio 12

Moltiplica la cifra quoziente appena ottenuta $(6)$ per il divisore $28$ .

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

Passaggio 13

Sottrai $168$ da $168$ .

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

Passaggio 14

Il risultato della divisione di $155.68 \div 2.8$ è $55.6$ .

$55.6$

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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