Soluzione - Long subtraction

Spiegazione passo passo

Perché imparare questo

Termini e argomenti

1. Rewrite the numbers from top to bottom, aligned by their place values

2. Subtract the numbers using long subtraction method

11, 518

11,518

Guarda i passaggi

Place value	tens	ones	.	tenths	hundredths	thousandths

	1	2	,	2
-		0	,	6	8	2
			,

Put zeros in the blank number places:

Place value	tens	ones	.	tenths	hundredths	thousandths

	1	2	,	2	0	0
-		0	,	6	8	2
			,

Because the upper digit (0) in the thousandths column is too small to get a positive difference, borrow 1 from the number to the left (20) which becomes (19) and get (10).

Place value	tens	ones	.	tenths	hundredths	thousandths
				1	9	10
	1	2	,	2	0	0
-		0	,	6	8	2
			,

Subtract the numbers in the thousandths column from the top number:
10-0-2=8

Place value	tens	ones	.	tenths	hundredths	thousandths
				1	9	10
	1	2	,	2	0	0
-		0	,	6	8	2
			,			8

Subtract the numbers in the hundredths column from the top number:
9-8=1

Place value	tens	ones	.	tenths	hundredths	thousandths
				1	9	10
	1	2	,	2	0	0
-		0	,	6	8	2
			,		1	8

Because the upper digit (1) in the tenths column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (11).

Subtract the numbers in the tenths column from the top number:
11-6=5

Subtract the numbers in the ones column from the top number:
1-0=1

Write 1 in the tens place.

The solution is: 11,518

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Why learn this

Place value

hundredths

thousandths

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