Soluzione - Long subtraction

0, 0031812

0,0031812

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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	hundred thousandths	millionths	ten millionths

	0	,	0	0	3	2	6
-	0	,	0	0	0	0	7	8	8
		,

Put zeros in the blank number places:

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths

	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,

2. Subtract the numbers using long subtraction method

Because the upper digit (0) in the ten millionths column is too small to get a positive difference, borrow 1 from the number to the left (60) which becomes (59) and get (10).

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,							2

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,						1	2

Because the upper digit (5) in the hundred thousandths 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 (15).

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
						1	15
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,						1	2

Subtract the numbers in the hundred thousandths column from the top number:
15-7=8

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
						1	15
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,					8	1	2

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
						1	15
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,				1	8	1	2

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
						1	15
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,			3	1	8	1	2

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
						1	15
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,		0	3	1	8	1	2

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
						1	15
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
		,	0	0	3	1	8	1	2

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

Place value	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
						1	15
							5	9	10
	0	,	0	0	3	2	6	0	0
-	0	,	0	0	0	0	7	8	8
	0	,	0	0	3	1	8	1	2

The solution is: 0,0031812

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