Soluzione - Long subtraction

6, 9987875

6,9987875

Guarda i passaggi

Spiegazione passo passo

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

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths

	1	9
-	1	2	,	0	0	1	2	1	2	5
			,

Put zeros in the blank number places:

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths

	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,

2. Subtract the numbers using long subtraction method

Because the upper digit (0) in the ten millionths column is too small to get a positive difference, borrow 1 from the number to the left (9.000000) which becomes (8.999999) and get (10).

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,

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

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,							5

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

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,						7	5

Subtract the numbers in the hundred thousandths column from the top number:
9-1=8

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,					8	7	5

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

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,				7	8	7	5

Subtract the numbers in the thousandths column from the top number:
9-1=8

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,			8	7	8	7	5

Subtract the numbers in the hundredths column from the top number:
9-0=9

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,		9	8	7	8	7	5

Subtract the numbers in the tenths column from the top number:
9-0=9

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
			,	9	9	8	7	8	7	5

Subtract the numbers in the ones column from the top number:
8-2=6

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
		6	,	9	9	8	7	8	7	5

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

Place value	tens	ones	.	tenths	hundredths	thousandths	ten thousandths	hundred thousandths	millionths	ten millionths
		8		9	9	9	9	9	9	10
	1	9	,	0	0	0	0	0	0	0
-	1	2	,	0	0	1	2	1	2	5
	0	6	,	9	9	8	7	8	7	5

The solution is: 6,9987875

Come ci siamo comportati?

Lasciaci un feedback

Perché imparare questo

Why learn this

Termini e argomenti

Larga substracción