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

10, 28

10,28

Guarda i passaggi

Put zeros in the blank number places:

Place value	hundreds	tens	ones	.	tenths	hundredths

	1	2	0	,	0	0
-	1	0	9	,	7	2
				,

Because the upper digit (0) in the hundredths column is too small to get a positive difference, borrow 1 from the number to the left (20.0) which becomes (19.9) and get (10).

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

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

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

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

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

Subtract the numbers in the ones column from the top number:
9-9=0

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

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

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

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

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

The solution is: 10,28

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Place value

hundredths

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