Solution - Long multiplication
1,248
Step-by-step explanation
1. Rewrite the numbers from top to bottom aligned to the right
| Place value | thousands | hundreds | tens | ones |
| 3 | 1 | 2 | ||
| × | 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 312, from right to left.
Multiply the ones digit (4) of the multiplicator by the number in the ones place value:
4×2=8
Write 8 in the ones place.
| Place value | thousands | hundreds | tens | ones |
| 3 | 1 | 2 | ||
| × | 4 | |||
| 8 |
Multiply the ones digit (4) of the multiplicator by the number in the tens place value:
4×1=4
Write 4 in the tens place.
| Place value | thousands | hundreds | tens | ones |
| 3 | 1 | 2 | ||
| × | 4 | |||
| 4 | 8 |
Multiply the ones digit (4) of the multiplicator by the number in the hundreds place value:
4×3=12
Write 2 in the hundreds place.
Because the result is greater than 9, carry the 1 to the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 1 | ||||
| 3 | 1 | 2 | ||
| × | 4 | |||
| 1 | 2 | 4 | 8 |
The solution is: 1,248
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