Soluzione - Long subtraction

2, 123

2,123

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Spiegazione passo passo

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

Place value	ones	.	tenths	hundredths	thousandths

	2	,	2	3
-	0	,	1	0	7
		,

Put zeros in the blank number places:

Place value	ones	.	tenths	hundredths	thousandths

	2	,	2	3	0
-	0	,	1	0	7
		,

2. Subtract the numbers using long subtraction method

Because the upper digit (0) in the thousandths column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (10).

Place value	ones	.	tenths	hundredths	thousandths
				2	10
	2	,	2	3	0
-	0	,	1	0	7
		,

Subtract the numbers in the thousandths column from the top number:
10-0-7=3

Place value	ones	.	tenths	hundredths	thousandths
				2	10
	2	,	2	3	0
-	0	,	1	0	7
		,			3

Subtract the numbers in the hundredths column from the top number:
2-0=2

Place value	ones	.	tenths	hundredths	thousandths
				2	10
	2	,	2	3	0
-	0	,	1	0	7
		,		2	3

Subtract the numbers in the tenths column from the top number:
2-1=1

Place value	ones	.	tenths	hundredths	thousandths
				2	10
	2	,	2	3	0
-	0	,	1	0	7
		,	1	2	3

Subtract the numbers in the ones column from the top number:
2-0=2

Place value	ones	.	tenths	hundredths	thousandths
				2	10
	2	,	2	3	0
-	0	,	1	0	7
	2	,	1	2	3

The solution is: 2,123

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