Soluzione - Long subtraction

20.000.018

20.000.018

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Spiegazione passo passo

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

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones

	2	0	0	0	0	0	3	2
-							1	4

2. Subtract the numbers using long subtraction method

Because the upper digit (2) in the ones column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (12).

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4

Subtract the numbers in the ones column from the top number:
12-4=8

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
								8

Subtract the numbers in the tens column from the top number:
2-1=1

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
							1	8

Write 0 in the hundreds place.

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
						0	1	8

Write 0 in the thousands place.

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
					0	0	1	8

Write 0 in the ten thousands place.

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
				0	0	0	1	8

Write 0 in the hundred thousands place.

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
			0	0	0	0	1	8

Write 0 in the millions place.

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
		0	0	0	0	0	1	8

Write 2 in the ten millions place.

Place value	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
							2	12
	2	0	0	0	0	0	3	2
-							1	4
	2	0	0	0	0	0	1	8

The solution is: 20,000,018

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