Soluzione - Long subtraction

7.599

7.599

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Spiegazione passo passo

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

Place value	thousands	hundreds	tens	ones

	9	4	6	0
-	1	8	6	1

2. Subtract the numbers using long subtraction method

Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the digit (6) in the next number place which becomes (5) and get (10).

Place value	thousands	hundreds	tens	ones
			5	10
	9	4	6	0
-	1	8	6	1

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

Place value	thousands	hundreds	tens	ones
			5	10
	9	4	6	0
-	1	8	6	1
				9

Because the upper digit (5) in the tens column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (15).

Place value	thousands	hundreds	tens	ones
		3	15
			5	10
	9	4	6	0
-	1	8	6	1
				9

Subtract the numbers in the tens column from the top number:
15-6=9

Place value	thousands	hundreds	tens	ones
		3	15
			5	10
	9	4	6	0
-	1	8	6	1
			9	9

Because the upper digit (3) in the hundreds 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 (13).

Place value	thousands	hundreds	tens	ones
	8	13
		3	15
			5	10
	9	4	6	0
-	1	8	6	1
			9	9

Subtract the numbers in the hundreds column from the top number:
13-8=5

Place value	thousands	hundreds	tens	ones
	8	13
		3	15
			5	10
	9	4	6	0
-	1	8	6	1
		5	9	9

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

Place value	thousands	hundreds	tens	ones
	8	13
		3	15
			5	10
	9	4	6	0
-	1	8	6	1
	7	5	9	9

The solution is: 7,599

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