The first of the two digits is the one that you carry over. The second method is really the first method dressed a little differently. Long division?) Use formal written methods, including long multiplication, to solve a range of problems ... 19m video. When we multiply 612 × 20 we only need to multiply 612 × 2 and place the result one column over (so it is the same as multiplying by 20). This article explains the process for doing long multiplication following the column multiplication method used in primary schools at KS2. There are a variety of strategies for completing long multiplication including the classic paper and pencil methods, lattice multiplication (which we feature on this page), mental strategies, manipulative use, technology, and various other paper and pencil algorithms. Wouldn't it be easier to use punnet squares? What can I do if I am confused by all of the zeroes on the end of the numbers? Multiply ones digit of the top number by the ones digit of the bottom number. wikiHow is where trusted research and expert knowledge come together. Make sure you get your numbers in the right columns! Last Updated: July 2, 2020 – Establishing prior multiplication knowledge. One thing that can really help you in long multiplication is if you know the multiplication table by heart. HA are given an investigation, which mine really enjoyed. We begin by multiplying all of the 3 digits in 287 by 5. 34 x 27, 851 x 82 or 4,274 x 93. Arrange the 4-digit multiplicand & 3-digit multiplier for long multiplication method, multiply the multiplicand by Least Significant Digit (LSD) of multiplier and the product underneath to the line in the way that the Ones’s place value of multiplicand and One’s place value of product of LSD of multiplier & whole multiplicand should be vertically aligned in a straight line. We will begin by looking at an example. Thanks to all authors for creating a page that has been read 1,828,450 times. Include your email address to get a message when this question is answered. The grid method (also known as the box method) of multiplication is an introductory approach to multi-digit multiplication calculations that involve numbers larger than ten.Because it is often taught in mathematics education at the level of primary school or elementary school, this algorithm is sometimes called the grammar school method.. We know ads can be annoying, but theyâre what allow us to make all of wikiHow available for free. Write 756 above 32, making sure that the ones and tens columns of both numbers line up, so that the 6 from 756 is above the 2 in 32 and the 5 in 756 is above the 3 in 32, and so on. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/9c\/Do-Long-Multiplication-Step-1-Version-3.jpg\/v4-460px-Do-Long-Multiplication-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/9\/9c\/Do-Long-Multiplication-Step-1-Version-3.jpg\/aid41906-v4-728px-Do-Long-Multiplication-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>

License: Creative Commons<\/a>

\n<\/p>