Soluzione - Long subtraction

9, 5

9,5

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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

	1	0	,	7
-		1	,	2
			,

2. Subtract the numbers using long subtraction method

Subtract the numbers in the tenths column from the top number:
7-2=5

Place value	tens	ones	.	tenths

	1	0	,	7
-		1	,	2
			,	5

Because the upper digit (0) in the ones 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 (10).

Place value	tens	ones	.	tenths
	0	10
	1	0	,	7
-		1	,	2
			,	5

Subtract the numbers in the ones column from the top number:
10-1=9

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

Write 0 in the tens place.

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

The solution is: 9,5

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