Solution - Long subtraction

9.5

9.5

See steps

Step-by-step explanation

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

Place value	tens	ones	.	tenths

	1	0	.	7
-		1	.	2
			.

2. Subtract the numbers using long subtraction method

Subtract the numbers in the tenths column from the top number:
7-2=5

Place value	tens	ones	.	tenths

	1	0	.	7
-		1	.	2
			.	5

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

Place value	tens	ones	.	tenths
	0	10
	1	0	.	7
-		1	.	2
			.	5

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

Place value	tens	ones	.	tenths
	0	10
	1	0	.	7
-		1	.	2
		9	.	5

Write 0 in the tens place.

Place value	tens	ones	.	tenths
	0	10
	1	0	.	7
-		1	.	2
	0	9	.	5

The solution is: 9.5

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Terms and topics

Long substraction