Soluzione - Long subtraction

10.880

10.880

Guarda i passaggi

Spiegazione passo passo

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

Place value	ten thousands	thousands	hundreds	tens	ones

	1	2	8	0	0
-		1	9	2	0

2. Subtract the numbers using long subtraction method

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

Place value	ten thousands	thousands	hundreds	tens	ones

	1	2	8	0	0
-		1	9	2	0
					0

Because the upper digit (0) in the tens column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (10).

Place value	ten thousands	thousands	hundreds	tens	ones
			7	10
	1	2	8	0	0
-		1	9	2	0
					0

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

Place value	ten thousands	thousands	hundreds	tens	ones
			7	10
	1	2	8	0	0
-		1	9	2	0
				8	0

Because the upper digit (7) in the hundreds 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 (17).

Place value	ten thousands	thousands	hundreds	tens	ones
		1	17
			7	10
	1	2	8	0	0
-		1	9	2	0
				8	0

Subtract the numbers in the hundreds column from the top number:
17-9=8

Place value	ten thousands	thousands	hundreds	tens	ones
		1	17
			7	10
	1	2	8	0	0
-		1	9	2	0
			8	8	0

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

Place value	ten thousands	thousands	hundreds	tens	ones
		1	17
			7	10
	1	2	8	0	0
-		1	9	2	0
		0	8	8	0

Write 1 in the ten thousands place.

Place value	ten thousands	thousands	hundreds	tens	ones
		1	17
			7	10
	1	2	8	0	0
-		1	9	2	0
	1	0	8	8	0

The solution is: 10,880

Come ci siamo comportati?

Lasciaci un feedback

Perché imparare questo

Why learn this

Termini e argomenti

Larga substracción