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

3, 682

3,682

Guarda i passaggi

Place value	tens	ones	.	tenths	hundredths	thousandths

	9	2	,	1	6	9
-	8	8	,	4	8	7
			,

Subtract the numbers in the thousandths column from the top number:
9-7=2

Place value	tens	ones	.	tenths	hundredths	thousandths

	9	2	,	1	6	9
-	8	8	,	4	8	7
			,			2

Because the upper digit (6) in the hundredths column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (16).

Place value	tens	ones	.	tenths	hundredths	thousandths
				0	16
	9	2	,	1	6	9
-	8	8	,	4	8	7
			,			2

Subtract the numbers in the hundredths column from the top number:
16-8=8

Place value	tens	ones	.	tenths	hundredths	thousandths
				0	16
	9	2	,	1	6	9
-	8	8	,	4	8	7
			,		8	2

Because the upper digit (0) 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 (10).

Subtract the numbers in the tenths column from the top number:
10-4=6

Because the upper digit (1) in the ones column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (11).

Place value	tens	ones	.	tenths	hundredths	thousandths
	8	11
		1		10
				0	16
	9	2	,	1	6	9
-	8	8	,	4	8	7
			,	6	8	2

Subtract the numbers in the ones column from the top number:
11-8=3

Place value	tens	ones	.	tenths	hundredths	thousandths
	8	11
		1		10
				0	16
	9	2	,	1	6	9
-	8	8	,	4	8	7
		3	,	6	8	2

Subtract the numbers in the tens column from the top number:
8-8=0

Place value	tens	ones	.	tenths	hundredths	thousandths
	8	11
		1		10
				0	16
	9	2	,	1	6	9
-	8	8	,	4	8	7
	0	3	,	6	8	2

The solution is: 3,682

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Why learn this

Place value

hundredths

thousandths

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