Lépésről lépésre magyarázat
1. Rewrite the numbers from top to bottom aligned to the right
| Helyiérték | egyesek | . | tizedek | századok |
| 0 | , | 5 | ||
| × | 0 | , | 0 | 9 |
| , |
Ignore the decimal points and multiply as if these are whole numbers (as if each most right digit is the ones digit):
In this case we removed 3 decimal place(s). So once calculated, the result will be reduced by the factor of 1 000.
| Helyiérték | tízesek | egyesek |
| 5 | ||
| × | 9 | |
2. Add the partial products
Start by multiplying the egyesek digit (9) of the multiplier 9 by each digit of the multiplicand 5, from right to left.
Multiply the egyesek digit (9) of the multiplicator by the number in the egyesek place value:
9×5=45
Write 5 in the egyesek place.
Because the result is greater than 9, carry the 4 to the tízesek place.
| Helyiérték | tízesek | egyesek |
| 4 | ||
| 5 | ||
| × | 9 | |
| 4 | 5 |
Because we have 3 digit(s) to the right of the decimal point in the numbers that are being multiplied, we move the decimal point 3 time(s) to the left (reducing the result by the factor of 1 000) to get the final result:
The solution is: 0,045