The **lattice method** is an alternative to long multiplication for numbers. In this approach, a **lattice** is first constructed, sized to fit the numbers being multiplied. If we are multiplying an -digit number by an -digit number, the size of the **lattice** is .

Also, where does lattice multiplication come from?

Historically, the lattice method of multiplication appears in the first printed **arithmetic** book, printed in Treviso (Italy) in 1478. It shows this exact method and a variation as well as some variations of the long multiplication algorithm commonly taught today. These methods were introduced into Europe by Fibonacci.

How do you do grid method multiplication?

To calculate 35 × 7, set it out in a **grid** like this: **Multiply** each pair of numbers and write them in the **grid**. Then add the two products (ie answers to the multiplications) to find the answer. The **grid method** can also be used for more difficult multiplications, such as 35 x 26.

What is lattice addition?

The **lattice** method of **addition** is an alternate form of adding numbers that eliminates the need to 'carry' tens over to the next column.

**You May Like Also**