Soluzione - Long subtraction

134, 12

134,12

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Spiegazione passo passo

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

Place value	hundreds	tens	ones	.	tenths	hundredths

	3	6	8	,	9
-	2	3	4	,	7	8
				,

Put zeros in the blank number places:

Place value	hundreds	tens	ones	.	tenths	hundredths

	3	6	8	,	9	0
-	2	3	4	,	7	8
				,

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 (9) in the next number place which becomes (8) and get (10).

Place value	hundreds	tens	ones	.	tenths	hundredths
					8	10
	3	6	8	,	9	0
-	2	3	4	,	7	8
				,

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

Place value	hundreds	tens	ones	.	tenths	hundredths
					8	10
	3	6	8	,	9	0
-	2	3	4	,	7	8
				,		2

Subtract the numbers in the tenths column from the top number:
8-7=1

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

Subtract the numbers in the ones column from the top number:
8-4=4

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

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

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

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

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

The solution is: 134,12

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