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

185, 25

185,25

Guarda i passaggi

Put zeros in the blank number places:

Place value	hundreds	tens	ones	.	tenths	hundredths

	2	0	6	,	0	0
-		2	0	,	7	5
				,

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 (6.0) which becomes (5.9) and get (10).

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

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

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

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

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

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

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

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

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

Write 1 in the hundreds place.

The solution is: 185,25

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Why learn this

Place value

hundredths

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