Soluzione - Long subtraction

20, 66

20,66

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Spiegazione passo passo

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

Place value	tens	ones	.	tenths	hundredths

	3	5	,	2
-	1	4	,	5	4
			,

Put zeros in the blank number places:

Place value	tens	ones	.	tenths	hundredths

	3	5	,	2	0
-	1	4	,	5	4
			,

2. Subtract the numbers using long subtraction method

Because the upper digit (0) in the hundredths 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).

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

Subtract the numbers in the hundredths column from the top number:
10-0-4=6

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

Because the upper digit (1) in the tenths column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (11).

Place value	tens	ones	.	tenths	hundredths
		4		11
				1	10
	3	5	,	2	0
-	1	4	,	5	4
			,		6

Subtract the numbers in the tenths column from the top number:
11-5=6

Place value	tens	ones	.	tenths	hundredths
		4		11
				1	10
	3	5	,	2	0
-	1	4	,	5	4
			,	6	6

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

Place value	tens	ones	.	tenths	hundredths
		4		11
				1	10
	3	5	,	2	0
-	1	4	,	5	4
		0	,	6	6

Subtract the numbers in the tens column from the top number:
3-1=2

Place value	tens	ones	.	tenths	hundredths
		4		11
				1	10
	3	5	,	2	0
-	1	4	,	5	4
	2	0	,	6	6

The solution is: 20,66

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