Soluzione - Long subtraction
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 | . | tenths | hundredths |
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| , |
Put zeros in the blank number places:
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the hundredths column is too small to get a positive difference, borrow 1 from the number to the left (30000000.0) which becomes (29999999.9) and get (10).
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| , |
Subtract the numbers in the hundredths column from the top number:
10-0-6=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| , | 4 |
Subtract the numbers in the tenths column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| , | 4 | 4 |
Subtract the numbers in the ones column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 4 | , | 4 | 4 |
Subtract the numbers in the tens column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 4 | 4 | , | 4 | 4 |
Subtract the numbers in the hundreds column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 4 | 4 | 4 | , | 4 | 4 |
Subtract the numbers in the thousands column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 4 | 4 | 4 | 4 | , | 4 | 4 |
Subtract the numbers in the ten thousands column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 4 | 4 | 4 | 4 | 4 | , | 4 | 4 |
Subtract the numbers in the hundred thousands column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 4 | 4 | 4 | 4 | 4 | 4 | , | 4 | 4 |
Subtract the numbers in the millions column from the top number:
9-5=4
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 4 | 4 | 4 | 4 | 4 | 4 | 4 | , | 4 | 4 |
Subtract the numbers in the ten millions column from the top number:
2-1=1
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | ||
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | , | 0 | 0 | |
| - | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | , | 5 | 6 |
| 1 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | , | 4 | 4 |
The solution is: 14444444,44
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