It is a technique that involves taking two numbers, placing them on the outside of a square, and then computing the product. By using knowledge of place value to separate a larger number into its parts–ones, tens, and hundreds–a large number becomes much more manageable. My brother (who is currently in 4th grade) is learning a technique called Lattice multiplication in school. This method breaks the multiplication process into smaller steps, which makes the multiplication easier.
In this method, we organize the number in boxes, and thus this method is also named the box method. This page includes printable worksheets for 3rd. You multiply in parts and then add to get your final answer. The lattice multiplication method is used to multiply two numbers in which at least one of them is a two-digit number or greater. Lattice multiplication is a simple technique that breaks long multiplication process into smaller steps. Often parents don’t feel qualified to help their child with a specific subject, but with the great resources available to parents online it can take only a few minutes to familiarize yourself with these alternative methods, including partial products and lattice multiplication:įirst, the partial products method, which works based on the same premise as partial sums and differences. This approach uses a lattice grid to break down each digit in the numbers being multiplied while keeping the numbers organised. Multi-Digit multiplication can be a frustrating experience for many students. These algorithms are helpful for parents to know and be able to use to help their children. 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. To compliment a previous article on Alternative Methods in Elementary Math: Partials Sums and Differences, we wanted to present information for upper elementary students learning multiplication through alternative algorithms that include partial products and lattice multiplication.
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