Solution - Long subtraction
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
1 | 8 | 0 | ||||||||||
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. |
Put zeros in the blank number places:
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the hundred millionths column is too small to get a positive difference, borrow 1 from the number to the left (80.0000000) which becomes (79.9999999) and get (10).
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. |
Subtract the numbers in the hundred millionths column from the top number:
10-0-3=7
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 7 |
Subtract the numbers in the ten millionths column from the top number:
9-3=6
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 6 | 7 |
Subtract the numbers in the millionths column from the top number:
9-3=6
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 6 | 6 | 7 |
Subtract the numbers in the hundred thousandths column from the top number:
9-3=6
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 6 | 6 | 6 | 7 |
Subtract the numbers in the ten thousandths column from the top number:
9-3=6
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 6 | 6 | 6 | 6 | 7 |
Subtract the numbers in the thousandths column from the top number:
9-3=6
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 6 | 6 | 6 | 6 | 6 | 7 |
Subtract the numbers in the hundredths column from the top number:
9-3=6
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 6 | 6 | 6 | 6 | 6 | 6 | 7 |
Subtract the numbers in the tenths column from the top number:
9-3=6
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
. | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 |
Subtract the numbers in the ones column from the top number:
9-5=4
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
4 | . | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 |
Subtract the numbers in the tens column from the top number:
7-2=5
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
5 | 4 | . | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 |
Write 1 in the hundreds place.
Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths | millionths | ten millionths | hundred millionths |
7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
1 | 8 | 0 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
- | 2 | 5 | . | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
1 | 5 | 4 | . | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 |
The solution is: 154.66666667
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