Soluzione - Long subtraction

0, 0124

0,0124

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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	ten thousandths

	1	,	0	0	2	4
-	0	,	9	9
		,

Put zeros in the blank number places:

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths

	1	,	0	0	2	4
-	0	,	9	9	0	0
		,

2. Subtract the numbers using long subtraction method

Subtract the numbers in the ten thousandths column from the top number:
4-0=4

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths

	1	,	0	0	2	4
-	0	,	9	9	0	0
		,				4

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths

	1	,	0	0	2	4
-	0	,	9	9	0	0
		,			2	4

Because the upper digit (0) in the hundredths column is too small to get a positive difference, borrow 1 from the number to the left (1.0) which becomes (0.9) and get (10).

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths
	0		9	10
	1	,	0	0	2	4
-	0	,	9	9	0	0
		,			2	4

Subtract the numbers in the hundredths column from the top number:
10-9=1

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths
	0		9	10
	1	,	0	0	2	4
-	0	,	9	9	0	0
		,		1	2	4

Subtract the numbers in the tenths column from the top number:
9-9=0

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths
	0		9	10
	1	,	0	0	2	4
-	0	,	9	9	0	0
		,	0	1	2	4

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths
	0		9	10
	1	,	0	0	2	4
-	0	,	9	9	0	0
	0	,	0	1	2	4

The solution is: 0,0124

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