Solution - Long multiplication
160
Step-by-step explanation
1. Rewrite the numbers from top to bottom aligned to the right
| Place value | hundreds | tens | ones |
| 4 | 0 | ||
| × | 4 | ||
2. Multiply the numbers using long multiplication method
Start by multiplying the ones digit (4) of the multiplier 4 by each digit of the multiplicand 40, from right to left.
Multiply the ones digit (4) of the multiplicator by the number in the ones place value:
4×0=0
Write 0 in the ones place.
| Place value | hundreds | tens | ones |
| 4 | 0 | ||
| × | 4 | ||
| 0 |
Multiply the ones digit (4) of the multiplicator by the number in the tens place value:
4×4=16
Write 6 in the tens place.
Because the result is greater than 9, carry the 1 to the hundreds place.
| Place value | hundreds | tens | ones |
| 1 | |||
| 4 | 0 | ||
| × | 4 | ||
| 1 | 6 | 0 |
The solution is: 160
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