To multiply two whole numbers, first write the numbers so each place value lines up vertically. Then, start with the ones place in the bottom number and multiply the bottom number by the ones digit in...To multiply two whole numbers, first write the numbers so each place value lines up vertically. Then, start with the ones place in the bottom number and multiply the bottom number by the ones digit in the top number, then by the tens digit, and so on. Next, write the partial products, lining up the digits in the place values with the numbers above. Insert a zero as a placeholder with each additional partial product. Finally, add the partial products.