Soluzione - Long subtraction

122.222.219

122.222.219

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Spiegazione passo passo

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

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

	1	2	2	2	2	2	2	2	2
-									3

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 (2) in the next number place which becomes (1) and get (12).

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

Subtract the numbers in the ones column from the top number:
12-3=9

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
									9

Write 1 in the tens place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
								1	9

Write 2 in the hundreds place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
							2	1	9

Write 2 in the thousands place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
						2	2	1	9

Write 2 in the ten thousands place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
					2	2	2	1	9

Write 2 in the hundred thousands place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
				2	2	2	2	1	9

Write 2 in the millions place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
			2	2	2	2	2	1	9

Write 2 in the ten millions place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
		2	2	2	2	2	2	1	9

Write 1 in the hundred millions place.

Place value	hundred millions	ten millions	millions	hundred thousands	ten thousands	thousands	hundreds	tens	ones
								1	12
	1	2	2	2	2	2	2	2	2
-									3
	1	2	2	2	2	2	2	1	9

The solution is: 122,222,219

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