Multiply two numbers and see the partial products that long multiplication adds up. Enter both numbers.
Usage Tip
The number of digits in a product is roughly the sum of the digit counts of the two factors.
Add the partial products
It is how multi-digit multiplication is done by hand.
Each non-zero digit of the second number produces one partial product.
The partial products are listed in the explanation.
Long multiplication breaks a multiplication into smaller steps. Each digit of the second number is multiplied by the whole first number, giving a partial product shifted one place to the left for every step, and the partial products are then added together. Seeing those partial products makes it easier to follow the method or check homework.
A quick way to check an answer is to estimate by rounding both numbers, so 48 times 52 is about 50 times 50, or 2500, which is close to the exact result of 2496. Another check is that the last digit of the product depends only on the last digits of the two numbers being multiplied.