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

4, 625

4,625

Guarda i passaggi

Put zeros in the blank number places:

Place value	tens	ones	.	tenths	hundredths	thousandths

	2	0	,	0	0	0
-	1	5	,	3	7	5
			,

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 (20.00) which becomes (19.99) and get (10).

Place value	tens	ones	.	tenths	hundredths	thousandths
	1	9		9	9	10
	2	0	,	0	0	0
-	1	5	,	3	7	5
			,

Subtract the numbers in the thousandths column from the top number:
10-0-5=5

Place value	tens	ones	.	tenths	hundredths	thousandths
	1	9		9	9	10
	2	0	,	0	0	0
-	1	5	,	3	7	5
			,			5

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

Place value	tens	ones	.	tenths	hundredths	thousandths
	1	9		9	9	10
	2	0	,	0	0	0
-	1	5	,	3	7	5
			,		2	5

Subtract the numbers in the tenths column from the top number:
9-3=6

Place value	tens	ones	.	tenths	hundredths	thousandths
	1	9		9	9	10
	2	0	,	0	0	0
-	1	5	,	3	7	5
			,	6	2	5

Subtract the numbers in the ones column from the top number:
9-5=4

Place value	tens	ones	.	tenths	hundredths	thousandths
	1	9		9	9	10
	2	0	,	0	0	0
-	1	5	,	3	7	5
		4	,	6	2	5

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

Place value	tens	ones	.	tenths	hundredths	thousandths
	1	9		9	9	10
	2	0	,	0	0	0
-	1	5	,	3	7	5
	0	4	,	6	2	5

The solution is: 4,625

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Why learn this

Place value

hundredths

thousandths

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